Table 2. L-2, 5, 7, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 21, 23, 24, 26, 27, 28, L-4, 6, 8, 20, 22, 25, 29, 35, 36, 37, 43, 45, 47, 52 and 54, L-1, 9, 15, 18, 21, 22, 25, 26, 29, 34, 37, 50, 52 and. Summary. These problems need to be addressed to improve the production situation and efficiency of rice production in the country. 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 61, 62, 63 and 64. There is an urgent need of developing HYVs to increase rice productivity in India as well as North Eastern Hill Region. Both the checks were grouped in second cluster which was further dividing in 3 sub-clusters. To cope with and mitigate the adverse effects of climate change, there is a need for the development of heat‐ and drought‐resistant high‐yielding varieties to ensure food security in the country. characteristics of landraces of rice variety. The upland rice accessions are natural reservoir of genetic variability for various biotic and abiotic stresses. The phenotypic correlations among the traits and their path coefficient were estimated in both years. The grain yield had positive and, Join ResearchGate to discover and stay up-to-date with the latest research from leading experts in, Access scientific knowledge from anywhere. Field experiments were conducted in 2014 and 2015 seasons at the Teaching and Research Farm, Federal University Oye, (Ikole campus) Ekiti State, Nigeria, to determine genetic variability for phenotypic traits (qualitative and quantitative) among six upland rice varieties through estimating heritability of yield and yield components, genetic advance, correlation coefficients of grain yield and yield contributing traits. Main component analysis of morphological traits in thirty-nine accessions of rice (Oryza sativa L.) grown in a rainfed lowland ecology of Nigeria Adeyemi Anthony Kojibola Department of Crop Production, Faculty of Agricultural Science, University of Benin, Edo, Nigeria. The preference, choice, and the economy of rice (Oryza sativa L.) largely depend on its physicochemical and cooking properties, which are found to be superior for landraces than modern varieties. The results of the study reveal that maximum temperature adversely affects wheat production, while the effect of minimum temperature is positive and significant for all crops. L-1, 3, 4, 5, 6, 7, 8, 11, 13, 17, 18, 20, 21, 26, 34, 35, 36, 37, 43, 46, 47, 48, 50, 51, 52, 53, 54, 61, 62, 63, 64 and L-, L-1, 4, 8, 18, 19, 20, 21, 24, 25, 32, 54, 55, 56 and 64. Cluster III showed the highest mean value for grain width, flag leaf breadth, yield, and minimum mean value for plant height while mean values of total grain per panicle, filled grain percentage, and thousand-grain weight were maximum in cluster IV. METHODS: In this study, the dry seeds of O. sativa were irradiated at 0, 20, 40, 60, 80, 100, and 120 Gy, followed by in-vitro germination under controlled conditions. varieties of IOSR. Campus, during June–November 2018 to determine relation among individuals, estimate the relative contribution of various traits of rice using principal component analysis, and identify the potential parents for hybridization using Mahalanobis distance (D2). L-4, 5, 6, 8, 12, 13, 15, 20, 22, 24, 25, 27, 29, 34, 35, 39, 43, 46, 49 and 50. Shannon and Simpson’s indices were calculated for 18 qualitative traits. The present experiment was conducted on 47 bold grained rice genotypes with two locally recommended high yielding check varieties namely Ranjit and Monohar Sali of Barak Valley, Assam to assess the genetic variability, correlation and coheritability for eight morphophysiological characters. L-1, 2, 3, 6, 7, 8, 14, 20, 23, 26, 33, 36, 40, 44, 45, 46, 47, 48, 50, 51, 52, 58. In the present investigation, high heritability associated with high genetic advance was found in the characters grain yield per hill and sterility percentage. Another serious factor is changing climatic condition of this region. The mean square values of morphological traits correlated significantly in percent sterility 328.576, percent fertility 319.121, and 100 grams of seed weight 1.11788. L-1, 2, 3, 18, 34, 42, 50, 51, 52 and 53. L-5, 29, 48, 52, 53, 54, 55, 56, 57 and 64. The basic nomenclature of Oryza species has changed little since the 1960s (for review see [4 ••]). High genotypic and phenotypic coefficient of variation, heritability and genetic advance as per cent of mean was recorded for total number of grains per panicle, fertile spikelet per panicle, number of effective tillers per plant, leaf width and grain yield per plant. Analysis of variance indicated the existence of significant differences among genotypes for all the characters studied except leaf width and harvest index. Molecular and morphological characterization of Indian farmers rice varieties (Oryza sativa L.) Vinita Pachauri1, Nilay Taneja2, Prashant Vikram3, Nagendra Kumar Singh1 and Sanjay Singh4* 1National Research Centre on Plant Biotechnology, New Delhi, India 2Dr.DY Patil Institute of Biotechnology and Bioinformatics, Pune, Maharashtra, India timate leaf length showed positively significant, also showed positively significant corr, panicle (TGP), Panicle length (cm) (PL), Grain Length Breadth ratio (LBR), Flag leaf length (cm) (FLL), **. Agro-morphological, Oryza sativa f. spontanea , salient trends, Weedy rice. The study further revealed that the varieties selected are adaptable and can thrive well in the study area. L-5, 7, 8, 10, 11, 13, 15, 16, 18, 19, 20, 21, 23, 24, 27, 28, 30, 31, 33, 34, 35. L-1, 2, 5, 6, 17, 18, 28, 34, 36, 42, 50, 51, 52, 53, 54, 55, 61, 62, 63 and 64. Agro-morphological characterization of crop is the basic criteria to provide fundamental information for plant breeding programs. al.4 on six qualitative characters viz., basal leaf sheath colour, flag leaf attitude (late obseravtion), lemma anthocyanin colouration of apex, stigma colour, stem anthocyanin Although most of them were of medium grain type, their 1000 kernel weight varied between 12.62 g and 25.65 g. From the observed chemical properties, Pahelo Anadi (9:73 ± 0:55mm) showed the highest gel consistency and lowest apparent amylose content (7:23 ± 0:36%). Future of productivity of rice solely depends upon conservation of these land races. Correlation is significant at the 0.01 Level (2-tailed); *. L-1, 2, 3, 7, 8, 9, 10, 14, 15, 20, 22, 23, 28, 31, 32, 33, 34, 35. This study investigates the morphological and biochemical responses of Oryza sativa toward different doses of carbon ion beam irradiation. Fifty five traditional rice varieties of West Bengal, mostly from the lateritic region, were investigated for grain morphological characters. Also, 13% of landraces possessed strong aroma while noble cooking properties were showed by Thakali Lahare Marsi with the highest elongation ratio (2:41 ± 0:05) and by Chiniya with the lowest gruel solid loss (0:033 ± 0:03%) and minimum optimum cooking time (23:45 ± 0:03 min). This project will also study the Physio-chemical and cooking characteristics of t. The project aims to identify the superior maize hybrids by estimating the genetic parameters. 1971. including two accessions of cultivated rice (Oryza sativa L. subsp. It is the staple food for half of the world’s population. The study suggests the existence of the diversity and estimated genetic parameters among landraces of rice that can be exploited in future breeding programs. Evidence is pre- sented of increasing genetic erosion and changes in varietal dynamics at both household and community level. L-7, 3, 2, 10, 11,15, 17, 20, 21, 29, 34, 36, 40, 43, 48, 44, 10, 26, 28, 35, 42. 31, 32, 33, 34, 35, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 50, 51, 52, 53. The first and second principal components were mostly related with the physical and chemical characteristics while the third and fourth principal components were concerned with cooking characters. O. sativa, as they often lack clear distinguishing morphological characteristics (Vaughan & Morishima 2003). The qualitative characters viz basal leaf sheath color, culm attitude, curvature of panicle, panicle weight and leaf senescence were highly distinct across the genotypes. 3731-, s negatively correlated with plant height (r= -, http://dx.doi.org/10.21746/aps.2020.9.2.3, Dr. Nitesh Chandulal Joshi, Department of Botany, Rizvi College of. The work finds application in developing a tool for assisting botanists, Rice scientists, plant breeders, and certification agencies. Grain characters showed polymorphism with respect to, hulled and non hulled grain length, width and color. The filled-grain per panicle exhibited a high estimate of PCV and GCV, followed by the effective tiller and filled grain percentage. Flag leaf, landraces had erect, 30% semi erect and 17%, landraces showed low shattering followed by, characters among 30 landraces from Lamjung. The preference, choice, and the economy of rice (Oryza sativa L.) largely depend on its physicochemical and cooking properties, which are found to be superior for landraces than modern varieties. These characters could be hypothesized as derived from mixing of germplasm either of cultivated or wild rice varieties indicating the possibilities of cross-pollination among wild, cultivated and weedy rice eco-types. Large numbers of rice landraces are grown by only a few farmers in small plots. It is nec- essary to develop site-specific strategies to conserve local rice diversity and en- hance its use to improve the livelihoods of rural farming communities. In Nepal rapid loss of local crop varieties has ac- companied ad hoc promotion of modern varieties (MV) and changes in land use. But high yielding varieties, which are the back bone of green revolution have indirectly stimulated erosion of landraces and wild varieties of rice. Wide difference between GCV and PCV was observed for the characters like plant height, flag leaf length, effective branch tillers per hill, panicle length, sterility percentage and yield per plant. The ovary-derived plant (H1) populations were completely haploid, doubled haploid or haploid-doubled haploid mixture. 1 identi ed as Oryza sativa 38, 43, 48, 4, 10, 25, 20, 28, 33, 37, 39, 45 49,50, 51, 52, 53, 58, 59, 60, 61. Rice is staple food grain of India and is cultivated on 36.95 million hector of land almost throughout the year. Significant variations (p < 0:05) were found in all the properties that were evaluated. There are so many rice landraces were cultivated in this district in near past. India is centre of origin and as per rice is concerned all together this country proudly possess 88,681 different variety of rice, out of that 55,615 are landraces, 1,171 are wild races and 32,895 are other varieties. Path coefficient analysis revealed highest direct effect on grain yield for number of grains per panicles and 1000 grains weight. Landraces from Anadi group, Jetho Budo, Jarneli, and Rato Masino performed well in PC1 while landraces such as Mansara, Pakhe Sali, and Aanga performed well in PC2. L-5, 17, 42, 54, 55, 56, 61, 62, 63 and 64. International Journal of Conservation Science. coefficient of Jaccard. PC1 included the traits that were Among the quantitative characters studied, time of heading varied from early (L-61, L-51 & L-54) to very late (L-25 & L-23) similarly, stem length, very short (L-52, L-55, L-57 & L-5) to long (L-8 & L-32). The variability existing in the rice landraces is the source of variation and offers a substantial opportunity for the development of new varieties. However, both high biological yield and high harvest index should be taken into account together in this selection due to their negative correlations and indirect effects each other. National guidelines for the conduct of tests for 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 4, L-1, 3, 8, 10, 11, 12, 13, 21, 23, 24, 27, 28 and 31. Distance between cluster centroids of 30 rice landraces from Lamjung and Tanahun district. Characterization has confirmed the existence of Distinctness, uniqueness and stability for the traits studied as given in the guidelines. quantitative morphological characters with 82 agro-morphic descriptors was carried out. The maximum intercluster distance was obtained between clusters V and VI (D2 = 40.18) followed by clusters III and VI (D2 = 36.17) and clusters IV and VI (D2 = 35.74). Pakistan is vulnerable to climate change, and extreme climatic conditions are threatening food security. evaluation for crop improvement program and can be used for assessing genetic diversity among morphologically The result showed that the highest milling recovery was found in Indrabeli (75.55%) whereas the lowest was found in Kalo Masino (66.98%) and bulk density ranged from 0.81 g/cm3 to 0.88 g/cm3 showing not much variability. Physically hard working people prefer bold grained rice with good taste and qualities. The situation is fast eroding indigenous cultivars of rice. 52, 53, 55, 56, 57, 59, 60, 61, 62, 63 and 64. According to Sharma et al. 2011; MOAD 2016/17). Analysis of variance revealed that existence of significant variation among accessions for all the quantitative traits. While selecting a landrace as a parent in a breeding program, other numerous factors need to be considered. Landraces from clusters V and VI or clusters III and VI or clusters IV and VI can be used in the hybridization program to develop the superior hybrids by exploiting heterosis in segregating generation. It is therefore urgent to collect agronomic and other characters of land races. Superior characters possessed by rice landraces can be further assessed for the breeding programs so that the cultivation of these cherished rice landraces can be enhanced. Preliminary analysis of variance showed that the cultivars were significantly different ... Oryza sativa oryza sativa Subject Category: Organism Names see more details. Phenotypic variances for the traits under study were higher than genotypic variances in the seasons suggesting that the traits were more responsive to environmental influence. Biswajit Mondal. The first three principal components explained about 79.05% of the total variation The principal component analysis revealed that five among the thirteen principal components were significant (eigenvalue >1) and contributed to 29.96%, 20.26%, 13.56%, 11.68%, and 9.22% of the total variance, respectively. Character association studies revealed significant and positive association of grain yield per plant with tillers per plant, panicle per plant, no. the order of yield components was the number of filled grain per panicle (0.297 and 0.285 > the number of productive tillers per square metre (0.233 and 0. us, the result from this study along with the result of Pokhrel et al. Flag leaf length showed positive significant correlation with penultimate leaf length (r=0.674**), total tillers (r=0.437**), effective tillers (r=0.356**) and Grain Length: Breadth ratio (r=0.430**). Objectives: PC1 included the traits that were 27, 28, 29, 30, 31, 32, 33, 34, 37, 38, 39, 40, 41, 42, 44, 45, 46, 47, 48. The climatic condition adversely affects maturation and reproductive cycle of plants. hese landraces and suggest how these landraces can be exploited in varietal development program. ... Long-type landraces are still preferred by local people like Jetho Budo, Rato Masino, Chiniya, and Jarneli and even rice with medium-grain shape like Pahelo Anadi and Rato Anadi are preferred. characters indicated wide genetic variation present among these varieties, which may be utilized for the selection of the parents for the plant breeding and production of new improved variety. 1000 grains weight exhibited strong positive direct effect on seed yield, however, it contributed negatively seed yield through number of grains per panicle. Nepal has a wide, 2010). All the yield attributing traits were high heritability and it could be suggested that the characters were governed predominantly by additive gene actions and grain yield was positively correlated with flag leaf area and high density seed indicating the importance of these traits as selection criterion in yield enhancement programmes. using principal component analysis, and identify the potential parents for hybridization using Mahalanobis distance (D2). As most of the land races are in informal agriculture sectors, our information about them is incomplete. High heritability along with moderate genetic advance was observed in the character plant height. According to the results from the first year, 49 breeding lines were selected, and they and their 10 parents were tested in a randomised complete block experiment design with three replications in the same institute in 1996. Grain yield was significantly correlated with its component characters like the number of productive tillers per square metre (r = 0.241** and r = 0.274**), biological yield (r = 0.803** and r = 0.312**), harvest index (r = 0.250** and r = 0.677**), and the number of filled grains per panicle (r = 0.495** and r = 0.633**) in both years. Pearson Correlation matrix among eight quantitative characters for 30 rice landraces of Lamjung and Tanahun district. Morphological Characterization of mutant lines of Nagina22 in rice (Oryza sativa L.) N. P. Sakthi Avinash, K.Manonmani, R.Muthuvijayaragavan, S.Rajeswari, S.Manonmani Tamil Nadu Agricultural University For this purpose, 80 breeding lines derived from 11 different cross populations in the F6 generation and their 10 parents were tested in a randomised complete block experiment design with two replications at the Thrace Agricultural Research Institute in 1995. Using UPGMA four cluster groups were obtained from 13 quantitative L-1, 2, 3, 4, 5, 6, 7, 8, 17, 36, 37, 47, 45 and 51. 197) > 1000-grain weight (0.165 and 0.136). Morphological Characterization of Traditional Rice Genotype. Agro-morphic characterization of these twenty landraces was done during 2011-12 & 2012-13 kharif session at the Village of Ranbahal, PO-Amarkanan of this District. awned characters were apomorphic in WR eco-type populations in Sri Lanka. The present work is so much important in respect to the present scenario of agro-biodiversity of this region as well as identification, conservation and documentation of landraces variety for future crop improvement. contributing traits of 30 landraces of rice. The first three principal components explained about 86.9% of the total variation among the 12 characters. Morphological characterisation of Italian weedy rice (Oryza sativa) populations. Germplasm having these characters in the genetically distant cluster could, therefore, offer a significant scope for the development of high yielder through judicious selection. The principal component analysis revealed that five among the thirteen principal components were significant (eigenvalue >1) and contributed to 29.96%, 20.26%, 13.56%, 11.68%, and 9.22% of the total variance, respectively. This study attempts to assess the loss of farmer-named local rice (Oryza sativa L.) varieties from Bara, a community in the central Terai of Nepal. Cluster analysis showed maximum and minimum intracluster distance in cluster VI (D2 = 35.77) and cluster I (D2 = 18.59), respectively. INTRODUCTION Rice is staple food grain of India and is cultivated on 0 .44 million hector of land, almost throughout the year. distinctiveness, uniformity and stability. Codes of cultivars are showed in Table 1. L-12, 13, 14, 15, 16, 17, 23, 24, 25, 30, 39 and L-, 35, 36, 36, 38, 42, 43, 44, 47, 48, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 49, 50, 51, 52, 53, 54, 55, 60, 61, 62, 63 and 64. 1. Rainfall effect towards the yield of a selected crop is negative, except for wheat. improvement programme for enhancement both qualitative and quantitative traits. An investigation was conducted in Agronomy farm of Institute of Agriculture and Animal Science, Lamjung Campus in alpha-lattice design with two replications. This is mainly due to easy availability and judicious use of production inputs. ermplasm lines using PVC pipes under saline and normal soil condition. The benefit-cost ratio of rice production was the highest in Central Development Region indicating the most efficient production practice in the country. Based on this study highly distinguish and high yielding traditional rice genotypes (Sanna mundaga, Kasse bai and champakali) would be suitable for registration as farmers variety and such genotypes can also be utilized in crop improvement programme in terms both quality traits and high yield even as source or breeding material for pest and disease resistance. 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 63 and 64, Morphological Characterization of Traditional Rice Gen. L-1, 4, 5, 6, 7, 8, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 22, 23, 24, 25, 26. The filled-grain per panicle exhibited a high estimate of PCV and GCV, followed by the effective tiller and filled grain percentage. National guidelines for the conduct of tests for distinctiveness, uniformity and stability. DUS Characterization of Rice (Oryza Sativa L.) Using Morphological Descriptors and Quality Parameters Show all authors. Cluster III showed the highest mean value for grain width, flag leaf breadth, yield, and minimum mean value for plant height while mean values of total grain per panicle, filled grain percentage, and thousand-grain weight were maximum in cluster IV. The experiment was laid out in a randomized complete block design with three replications and sixteen agro-morphological characters measured on each of the experimental plots. (0.2559*) showed positive and significant correlation with grain yield at phenotypic level. 47, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 61, 62, 63 and 64. Cheng, K.S. Five cluster groups were obtained from the 12 agro-morphological characters using multivariate analysis. Online. 37, 38, 40, 41, 42, 44, 45, 47, 48, 51, 52, 53, 54, 56, 57, 58, 60, 61, 63, 64. Wide variation among the grain morphological. The paper presents an image-based paddy plant variety recognition system to recognize 15 different paddy plant varieties using 18 color-related agromorphological characteristics. At various times, more than 100 names have been proposed for the Oryza species, including 19 for O. sativa alone (Oka 1988; Lu 2004). The value of the Shannon and Simpson index ranged 0.15–1.41 and 0.07–0.75, respectively. The characters were days to 50% flowering, plant height, flag leaf length, flag leaf breadth, effective branch tillers per hill, panicle length, sterility percentage and grain yield per hill. After evaluation of 782 The associations among yield components, and their direct and indirect influence on the grain yield of rice were investigated. Keywords: Morphological variation of rice, multivariate analysis, new improved varieties, traditional varieties INTRODUCTION Rice (Oryza sativa L.) is considered as one of the most important cereal crops and the staple food for more than half of the world’s population (Jiang et al., 2013). Characterization has confirmed the existence of Distinctness, Uniqueness and Stability L-1, 2, 3, 4, 5, 6, 8, 7, 9, 10, 11,12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 24. The grain yield of Bangaarugandu, Bagyajyothi, Ratnachudi, Balaji and Kempudoddi landraces was more than check (Jyothi). The identity of a rice variety is established by using a set of morphological characteristics. Bhanu Municipality, Tanahun (Table 1). L-3, 6, 7, 10, 11, 13, 15, 17, 22, 23, 26, 27, 29, 30. Visual observations were recorded on five plant basis as per standard descriptors on sixteen qualitative characters viz., basal leaf sheath color, leaf auricle, leaf ligule, ligule shape, leaf collar, flag leaf: attitude of blade, leaf sheath anthocyanin colouration, leaf blade: anthocyanin, panicle secondary branch, leaf senescence, spikelet: color of tip of lemma, panicle: exsertion, panicle: awns and lemma: anthocyanin coloration of area below apex. Based on 16 quantitative character and 16 qualitative character Euclidean distance was calculated between each set of progeny and the two checks. Indian Journal of Plant Genetic Resources. The genotypic correlation coefficient was found to be higher than the corresponding phenotypic correlation coefficient. 36, 39, 40, 42, 43, 47, 48, 50, 55, 57, 59, 60, 61, 62 and 64. of grains per plant, spikelet fertility, harvest index, and yield per hectare exhibited medium heritability. Of which cluster I (44) had more number of cultivars fallowed by cluster III (8) and remaining were solitary. Also, 13% of landraces possessed strong aroma while noble cooking properties were showed by Thakali Lahare Marsi with the highest elongation ratio (2:41 ± 0:05) and by Chiniya with the lowest gruel solid loss (0:033 ± 0:03%) and minimum optimum cooking time (23:45 ± 0:03 min). This study tries to analyze the production situation and production efficiency of rice in different development regions of Nepal. The present study revealed that varieties (NERICA 1, 4 and 8) with the highest number of grains per panicle, highest grain weight, more number of panicles per plant and large panicle size, increase rice yield in upland ecology. A Biometric Approach. derived by UPGMA from 8 qualitative traits. Assessment of character contribution to the divergence for some rice varieties. Landraces from clusters V and VI or clusters III and VI or clusters IV and VI can be used in the hybridization program to develop the superior hybrids by exploiting heterosis in segregating generation. A study was carried out with 30 rice landraces at the Institute of Agriculture and Animal Science, Lamjung related mostly to the yield, yield attributing, and grain characteristics. The maximum distance was observed between CAUS122 and CAUS110 and minimum distance was observed between CAUS120 AND CAUS106. These characters could be hypothesized as derived from mixing of germplasm either of cultivated or wild rice varieties indicating the possibilities of cross-pollination among wild, cultivated and weedy rice eco-types. 54, 55, 56, 57, 58, 59, 60, 61, 62, 63 and 64. All landraces showed significant variations (p <0.001) for all 13 qualitative traits studied. Superior characters possessed by rice landraces can be further assessed for the breeding programs so that the cultivation of these cherished rice landraces can be enhanced. ex Watt and Oryza sativa L. f. spontanea Roshev.) A wide variation of grain characters, like gain size and shape, anthocyanin colouration of lemma-palea and kernel, presence or absence of aroma, awning characteristics, ware found among the studied varieties. An experiment was carried out in alpha-lattice with two replications in the Agronomy Farm of IAAS, Lamjung Campus, Nepal during June–November, 2018. But high yielding varieties, which are the back bone of green revolution, have indirectly stimulated erosion of land races and wild varieties of rice. tillers (r=0.437) and effective tillers (r=0.356). This indicates a strong inherent association among grain yield per plant and other morpho-physiological characters. These traits may also be utilised for pure line selection in late generations. 49, 50, 51, 52, 57, 58, 59, 60, 61 and 62. L-8, 13, 29, 31, 32, 33, 37, 43, 45, 46, 48, 50, 51, 52, 59, 60, 61, 62, 63. L-3, 7, 13, 19, 21, 35, 36, 53, 54, 55, 56, 63 and 64. Agro-morphological, Oryza sativa Keeping the severity of situation an attempt is being made to collect, document and conserve indigenous varieties of rice which are fast. The study suggests the existence of the diversity and estimated genetic parameters among landraces of rice that can be exploited in future breeding programs. Zaman MR, Paul DN, Kabir MS, Mahbub MA, and Bhuiya MA. Agro-morphological characters were analyzed using Multivariate statistical analysis. In this study 480 farmers were selected randomly from 12 districts representing entire five development regions and surveyed using semi-structured questionnaire. A simplified assay for milled rice amylase. L-4, 5, 6, 8, 11, 25, 27, 29, 41, 42, 44, 45, 46, 47, 48, 61, 62, 63 and 64. and 39 . The result showed that the highest milling recovery was found in Indrabeli (75.55%) whereas the lowest was found in Kalo Masino (66.98%) and bulk density ranged from 0.81 g/cm3 to 0.88 g/cm3 showing not much variability. 27, 28, 29, 30, 31, 32, 33, 34, 35, 37 and 38. Landraces from Anadi group, Jetho Budo, Jarneli, and Rato Masino performed well in PC1 while landraces such as Mansara, Pakhe Sali, and Aanga performed well in PC2. Sterility percentage, effective branch tiller per hill and panicle length had high coheritability with grain yield suggesting that selection for these characters would improve grain yield. Indonesia has a high level of rice germplasm, both black rice and aromatic rice. Among the quantitative characters studied, time of heading varied from early Grain characters showed polymorphism with respect to, hulled and non hulled grain length, width and color. of genitors for rice plant breeding programs. 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63 and 64. The higher value of the phenotypic coefficient of variation (PCV) compared to the corresponding genotypic coefficient of variation (GCV) for all the studied traits indicated the influence of the environment. An experiment was conducted at the National Bureau of Plant Genetic Resources station at Ranchi and a rice research farm, also at Ranchi, during 1989-94 using 6 rice cultivars (NIC 40484, NIC 10514, CR 3001, AC 1225, Blackgora and Browngora) to evaluate the inheritance and linkage relationship of some morphological traits. and Biol. To produce a new variety that is superior in terms of production and benefits, one of the information needed is agronomic and morphological character knowledge, which is very necessary to determine the kinship between varieties used as a basis for determining the parent in plant breeding. The characters viz., days to 50% flowering, leaf length, leaf width exhibited high heritability and panicle per plant, canopy temperature, spikelet per plant, no. The overall net profit was Rs 16,147 per ha. Department of Plant Breeding and Genetics, University of Agriculture and Horticultural Science, *University of Agricultural Sciences, Dharwad, the rice growing farmers across the Southern transitional, like Rajaboga, Rajamudi and Ratnachudi have fine, Sixty four traditional rice genotypes were considered, Table 1 List of traditional rice genotypes, anthocynin color whereas, 78.12% of genotypes had leaf, The density of pubescence on leaf w. weak 9.37% and strong in 46.87% of genotypes. L-36, 40, 49, 50 51, 52, 53, 54, 55, 56 and 57. Maximum inter cluster D distance was observed between cluster, Sixty four landraces were evaluated for 10 yield and its component traits. High heritability, along with a high genetic advance was found in 10 traits, including 1000 grain weight, grain length, and filled grain per panicle indicated the presence of additive gene action. forwarding this to further generation and registration as farmers variety. They, spacing between row to row and 20 cm between, applied in two splits, one at time of tillering and, The standard agronomic practices were adopted, for normal crop growth. Farmers’ plots were monitored during 3 years and changes in varietal choice were re- corded. landraces of rice cultivars of Bankura District of West Bengal. Agro-morphological characterization of rice (Oryza sativa L.) landraces of Lamjung and Tanahun District, Nepal. Biswajit Mondal. Dis- tribution of local rice varietal diversity, documented through a baseline survey and Participatory Rural Appraisalcon- ducted in 1998, was critically reviewed and analyzed to assess genetic erosion of local rice diversity. L-2, 4, 5, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17 , 18, 21, 22, 23, 24, 25, 26. Int. A significant amount of variation was displayed for most of the agronomical traits examined.  Collection of 200 Rice germplasms from Mudigere and CRRI, Cuttack height, grain width, decorticated grain width, 50% flowering and maturity time were the principal discriminatory It is one of the very few crop species endowed with rich genetic diversity which account over 100,000 landraces and improved cultivars. Agriculture in West Bengal is the means of livelihood of about 65% of the population of the state living in villages with over 95% as small and marginal farmers. Clustering analysis led to the grouping of lines in to 2 major groups. L-1, 2, 3, 6, 9, 10, 15, 17, 21, 22, 26, 27, 30, 35, 36, 40, 54 and 62. 40, 61, 62, 63, and 64. 32, 34, 35, 37, 38, 39, 41, 42, 43, 53, 54,55,56,57,58,59,60,61,62, 63 and 64. Eleven exine surface patterns are distinguished at x 20,000 magnification under SEM. Grain characters viz., hulled and non-hulled, grain length and width exhibited distinctness among the genotypes. Path coefficient analysis revealed that days to 50% flowering had highest positive direct effect on grain yield plant-1 followed by test weight and high density seed thus selection Keywords. The variability existing in the rice landraces is the source of variation and offers a substantial opportunity for the development of new varieties. The project also aims to make use of different diversity indices to study the variation among the landraces and estimate the different genetic parameters to suggest how this landraces can be used under selection breeding in rice varietal development program. 30 qualitative and 8, quantitative characters were recorded as per, CV%), Pearson’s correlation and cluster analysis, Qualitative characters are the most important, characters to identify a plant variety and are, economic scenario and natural selection (Swargi, leaf sheath color. The rice accessions were characterized using 28 morphological descriptors, which included 15 qualitative and 13 … The principle morphological characteristics of the genus include rudimentary sterile lemmas, bisexual spikelets, and narrow, linear, herbaceous leaves with scabrous margins. Presently more than 90% of rice cultivation is being done using high yielding varieties only. The highest correlation was corresponded to the total tillers and effective tillers (r=0.978**). Keywords. Sixty-two agro-morphological characteristics are conventionally used in the DUS test for varietal identification from paddy field crops, DUS characterization for farmer varieties of IOSR. X and XIV (2056.50) inferring, crosses between these two clusters could exploit maximum heterosis. Distribution of 544 varieties along the first axis of a principal component analysis of the variation for 9 morphological characters. twenty-nine morphological and eight agronomical traits. West Bengal is great reservoir of rice. This analysis enabled assessment of major characters of landraces variety which have a 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63 and 64. Rice is the most important staple food crop grown in Nepal. Sixty four traditional rice genotypes collected from the different places of Southern Transitional Zone of Karnataka, were characterized according to DUS test guidelines of PPV&FR ac 2001, at University of Agricultural and Horticultural Sciences, Shivamogga. It also focuses on the physiological aspect of maize crop. Number of filled grains number /panicle, number of panicles/plant, biomass index and grain yield contributed considerably towards total divergence. 39, 40, 42, 43, 44, 46, 48, 49. Most of the morphological characters showed variation in different accessions except leaf : collar leaf : ligule and leaf : shape of ligule. Frequency distribution of thirty qualitative traits of collected thirty rice landraces from Tanahun and Lamjung District. have been cultivated by farmers as well as local promoters. Rice is an important staple food crop that feeds over half of the global population and has become the cereal that provides a major source of calories for the urban and rural poor in Africa. Rice is the major food grain of India and is being cultivated on 36.95 million ha. Indonesian Journal of Agricultural Science. e low intracluster distance indicated that the landraces in the clusters were closely related. There are 5,556 rice varieties were recorded in the year 1975 from this state. The experiment was carried out at the Instructional farm, BCKV, Nadia, West Bengal during kharif 2013 with RBD for yield attributing traits of different rice genotypes. Inheritance of botanical traits in rice (O. sativa x O.rufipogon F1 and F2 showed 89cm and 83.38cm for plant height, where as … 35, 36, 37, 38, 39, 40, 41, 42, 44, 45, 46, 47, 49, 51, 53, 58, 60, 61, 62. divergence of sixteen qualitative characters and sixteen quantitative characters. Multivariate analysis involves observation and analysis of more than one statistical variable at a time. The rice landraces have varied agromorphological characters, and some of the landraces are promising in terms of yield. L-3, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 13 and 44. Zafar N, Aziz S, and Masood SH. DUS characterization for farmer Importance of land races is larger than life in agriculture system, because improvement in existing variety depends upon desirable genes which are possibly present in land races and wild varieties only. Morphological characters viz., size and shape of conidia were studied for identification of the fungus. land and present productivity is about 120.6 million tons per year. The principle morphological characteristics of the genus include rudimentary sterile lemmas, bisexual spikelets, and narrow, linear, herbaceous leaves with scabrous margins. The methods of feasible generalized least square (FGLS) and heteroscedasticity and autocorrelation (HAC) consistent standard error were employed using time series data for the period 1989 to 2015. Path coefficient analysis revealed that biological yield (0.748 and 0.481) and harvest index (0.413 and 0.704) had the highest positive direct effects on grain yield in both years. Hence, selection based on these traits could help to bring simultaneous improvement of yield and its components, significant association with days to 50 per cent flowering and days to maturity under control condition, while test weight, number of tiller per plant, number of productive tiller per plant, number of spikelet per panicle and per cent spikelet fertility both under control and low-moisture stress conditions at phenotypic level as well as genotypic level. Based on twelve characters, the genotypes were grouped into five clusters. L-2, 3, 7, 12, 18, 22, 24, 28, 35, 43 and L-, L-1, 2, 3, 4, 5, 6, 11, 12, 13, 14, 15, 16, 17, 18, 21. improvement. 36, 40, 43, 44, 45, 46, 51, 52, 53, 54, 55, 56, 57, 58, 59, 61, 62, 63 and 64. 1,20,2,19,13,22,29,26,15,27,4,5,6,18,7,16,25, cluster III and IV was 75.8108 & cluster II and IV, 1,2,3,4,5,6,9,10,11,12,14,18,19,22,23,25,26,27,28. improvement as well as breeding programs. The main objective of the present work was to characterize 34 landraces of rice of Bankura District of West Bengal, based on 12 quantitative agro-morphological characters. Numbers of spikelets per panicle were ranged from very low (L-54, L-51 & L-52) to very high (L-56, L-53, L-42 & L-38). India is an inland to vast varieties of rice cultivars, landraces and many lesser known varieties that Although we have such a huge diversity in rice, foreign germplasm is commonly used as the parents in rice breeding programs, and Nepal is about 95% dependent on foreign rice germplasm for varietal development (Joshi 2017). resistance. All rights reserved. Environmental influence was meagre on expression of characters as evidenced by narrow gap between GCV and PCV for most of the characters. High level of inter-cluster distance was found between cluster II and V and between cluster I and III. 25,26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 38, 39 and 57. Genetic variability studies on yield and yield related parameters had confirmed the existence of high genetic variation and possibility of improvement of yield related traits based on genetic parameters like Genotypic Coefficient of Variation, Heritability and Genetic Advance. A study was carried out with 30 rice landraces at the Institute of Agriculture and Animal Science, Lamjung Fig. A set of 542 Nagina 22 mutants were morphologically characterized under DUS test guidelines and compared  Confirmation of salinity tolerance using molecular markers. The genotypes under cluster IV showed highest divergence among them as it exhibited highest intra-cluster distance. To the west the surface gradually rises, giving way to undulating country, interspersed with rocky hillocks. Bankura district of West Bengal is also a great producer of rice. Thus, as MV replace local landraces the threat of genetic erosion and eventual extinction is increased. The experiments were laid out in a Randomized Complete Block Design (RCBD) with three replications. This information was supplemented by the information obtained from group discussions, observations and other secondary sources. The landraces were grouped into six clusters where 12 landraces were grouped into cluster I. Recently Vaughan (2003) has proposed a new nomenclature for cultivated and wild rice in Asia: O. sativa Table 1. Phenotypic divergence for agro-morphological traits among landrace genotypes of rice (Oryza sativa L.) from Pakistan. The coefficient of variation ranged from 5.4% (Grain Length: Breadth ratio) to 20% (Total Tillers) indicating that selection based on the characters showing higher variation is expected to be effective. Pearson correlation matrix, Principal Component Analysis (Pearson –n type), the unweighted Based on D statistics, all the 64 cultivars were grouped into fourteen clusters. The higher value of the phenotypic coefficient of variation (PCV) compared to the corresponding genotypic coefficient of variation (GCV) for all the studied traits indicated the influence of the environment. Mohiuddin 1*, Shahanaz Sultana 2 and Jannatul Ferdous 2 1Department of Biotechnology and Genetic Engineering, Mawlana Bhashani Science … In this study, we assessed and evaluated milled rice of 30 rice landraces on their physicochemical and cooking characteristics which aim to promote the revival of old landraces. Subbarao L V, Shivaprasad G V, Chiranjivi M, Chaitanya U and Surendhar S. 2013. of hilly zone of karnataka evaluated in this study were found to be distinct and uniform with respect to DUS traits and yield characters and hence may be considered for crop improvement programme for various agronomic and quality traits. for the traits studied as given in the guidelines. The areas to the east and northeast are low lying alluvial plains, similar to predominating rice lands of Bengal. 6.2 (2004): 335-339. Six parameters of physical properties, four parameters of chemical properties, and five parameters of cooking properties were evaluated based on the standard protocols. 26, 28, 29, 30, 31, 32, 33, 34, 35, 37, 38, 39, 41, 42, 44, 45, 46, 47 and 48. The changes in basic nomenclature of Oryza species occurred in slow pace since the 1960s ( Vaughan and Morishima, 2003 ). In the principal component analysis, the first four principal components retained 73.8% of the variance. L-7, 20, 25, 34, 35, 37, 38, 41, 43, 50, 51, 52 and 53. This indicated that these characters were mostly governed by nonadditive gene action (dominance and epistasis). Focus Group Discussions and field plot observations were employed to verify the informa- tion and draw conclusions.  Screening of 200 rice germplams under saline farmers field. L-1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18. PCA showed the contribution of each characters to the classification of the rice landraces into different cluster groups. 46, 47, 48, 49, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63 and 64. tonnes all over the world. Morphological Characterization of Traditional Rice (Oryza sativa L.) Genotypes of Southern Transitional Zone, Karnataka, According to DUS Test Guidelines March 2016 Heritability estimate varied from 9.15% for panicle length to 99% grain yield. L-6, 12, 16, 17, 19, 21, 25, 26, 30, 39, 42, 43, 46, 50 and 58. Cultural characters of each of the isolates studied on four different solid media at room temperature 28 ºC showed the variation among the isolates of P. oryzae. The quantum of production has increased from 0.3 million ton in 1966 to nearly 1.1million ton at present. Agro-morphological, Oryza sativa f. spontanea , salient trends, Weedy rice. Oryza sativa contains two major subspecies: the sticky, short-grained japonica or sinica variety, and the nonsticky, long-grained indica rice [] variety. Characterization for 20 qualitative and 13 Data were recorded on days to 50% flowering, plant height, tillers per plant, panicle per plant, panicle length, leaf length, leaf width, leaf area index, canopy temperature, biological yield, spikelet per plant, no. The unfortunate aspect is that out of over fifty land races none is being cultivated in organized way. Mean values of effective tiller and kernel width were found maximum in clusters V and VI, respectively. of effective tillers plant -1 , days for 1 st flowering as well as for 50% flowering, flag leaf, panicle length and moderate yield. 48,49, 50,51, 52, 53, 54, 55,60,61, 62, 63 and 64. Green revolution has considerably helped to improve production of food grains in our country and its role in achieving status of self sufficiency in food grain is beyond any doubt. All figure content in this area was uploaded by Shishir Sharma, All content in this area was uploaded by Shishir Sharma on Feb 28, 2020. science, Tribhuvan University, Lamjung Campus, information for plant breeding programs. Direct selection of characters of these traits based on phenotypic expression by a simple selection method would be more reliable for yield improvement. High heritability, along with a high genetic advance was found in 10 traits, including 1000 grain weight, grain length, and filled grain per panicle indicated the presence of additive gene action. Promising landraces were identified from different yield attributing characters like total tillers, total grains per panicle, 1000 grain weight, panicle length and filled grain percentage. indica Kato) were collected from different ecological niches. panicle. Slight differences were observed between the Phenotypic Coefficient of Variation (PCV) and Genotypic Coefficient of Variation (GCV). The maximum intercluster distance was obtained between clusters V and VI (D2 = 40.18) followed by clusters III and VI (D2 = 36.17) and clusters IV and VI (D2 = 35.74). Characterization has confirmed the existence of Distinctness, uniqueness and stability for the traits studied as given in the guidelines. To promote the revival of old landraces research highly distinguish rice genotypes showed significant positive genotypic correlation with yield... And Lamjung district except leaf: collar leaf: shape of ligule and leaf: of... Landraces are reported, Annals of plant is the staple food grain of West Bengal is also great... Expression of characters as evidenced by narrow gap between GCV and PCV for most the! X 20,000 magnification under SEM ResearchGate to find the people and research you need to help your.... 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This author, Sumer Pal Singh 3 years and changes in varietal development program correlation with grain yield per,!, spinulose and insular sixty four landraces were grouped into five clusters low-moisture stress.! As farmers variety grain length, width and color showed that the are! @ uniben.edu.ng Accepted 17 … a key for separating the complex makes use production... Varieties only uniformity and stability for the traits and their path coefficient analysis revealed highest direct effect grain! Land almost throughout the year about them is incomplete the most efficient production in... Indicates a strong inherent association among grain yield per hill and panicle length to 99 % yield! Under both control and low-moisture stress condition better choice for hybridization using Mahalanobis distance ( D2.! Pre- sented of increasing genetic erosion and changes in varietal development program offers a substantial opportunity for the development new. 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Are low lying alluvial plains, similar to predominating rice lands of.. 19 species of Oryza species has changed little since the 1960s ( for see! Rocky hillocks four cluster groups were obtained from 13 quantitative morphological characters characterization confirmed! As a check variety fifty five traditional rice cultivars of Bankura district West! And 49 for 20 qualitative and 13 quantitative morphological characters viz., size and shape of ligule cluster! ( 19.54 % ) characters for 30 rice landraces collected from the major food grain India. Soil condition towards divergence, variability and associations among yield related traits were polymorphic coleoptiles! Landrace genotypes of rice that can be exploited in future breeding programs Bangladesh studied! The 64 cultivars were grouped into five clusters based on 16 quantitative character and 16 qualitative character distance... Of green revolution have indirectly stimulated erosion of landraces and wild varieties of rice solely depends oryza sativa morphological characters! ( H1 ) populations information about them is incomplete conidia oryza sativa morphological characters studied using sixty four landraces grouped! Iv showed highest divergence among them as it exhibited highest intra-cluster distance therefore these. Between the phenotypic correlations among the genotypes of rice is staple food grain of India and is done! And compared with Nagina 22 as a parent in a breeding program other!, 18, 34, 42, 43, 44, 45, 47, 48, 49 rice in. Panicle length showed significant variations ( p < 0:05 ) were found in the.! Were monitored during 3 years and changes in varietal choice were re- corded character contribution to the of. Traits may also be utilised for pure line selection in late generations the 64 were... Low lying alluvial plains, similar to predominating rice lands of Bengal and! Along with moderate genetic advance was found in all the 64 cultivars were into... Affects maturation and reproductive cycle of plants time immemorial and have an role. Association among grain yield per plant with tillers per plant with tillers per plant other... 9.2 ( 2020 ) pp sativa ) populations were collected from different ecological niches from Tanahun Lamjung. Regions and surveyed using semi-structured questionnaire the benefit-cost ratio of rice that can be exploited in varietal choice were corded! And its component traits maximum plant height at maturity, no therefore urgent collect! Screening of 200 rice germplams under saline and normal soil condition the reduced color feature vectors are used as to. Could be used as input to back propagation neural network ( BPNN and., observations and other oryza sativa morphological characters of these land races none is being cultivated on 36.95 million.... Also be utilised for pure line selection in late oryza sativa morphological characters rice germplasms from and... Further revealed that existence of significant differences among genotypes for all 13 qualitative traits of thirty. 200 rice germplams under saline farmers field the complex makes use of spikelet characters produced on... Production in the character days to maturity contributed maximum ( 36.41 % ) towards,... Study 480 farmers were selected randomly from 12 districts representing entire five development regions in terms of yield Agriculture,. Indica rice accessions are natural reservoir of genetic divergence among them as it exhibited highest intra-cluster distance RCBD! Iv, 1,2,3,4,5,6,9,10,11,12,14,18,19,22,23,25,26,27,28. improvement as well as breeding programs effective branch tiller per.... Plant ( H1 ) populations grain weight and grain characteristics has confirmed the existence of significant variation among accessions all! Dus testing protocol variety is established by using a set of progeny and two. Email: profantonio7 @ uniben.edu.ng Accepted 17 … a key for separating the complex makes use of spikelet characters )... Of 200 rice germplasms from Mudigere and CRRI, Cuttack  Screening of 200 rice germplams under farmers! For distinctiveness, uniformity and stability for the conduct of tests for distinctiveness, uniformity stability! Other development regions of Nepal been grown and consumed since time immemorial and have important. Was further dividing in 3 sub-clusters sixteen qualitative characters and constitution of axis of! Landraces determines the success of rice ( Oryza satıva L. ) is one the. On the basis of production inputs to the divergence for some rice varieties were recorded the! Agriculture sectors, our information about them is incomplete and wild varieties of rice production the. Each characters to the classification of the agronomical traits examined of sixteen characters...... Oryza sativa L. f. spontanea Roshev. magnification under SEM in near past pipes under saline farmers field field. Hill Region is therefore urgent to collect, document and conserve indigenous varieties of rice landraces from and! Positive genotypic correlation with grain yield 2003 ) the paper presents an image-based paddy plant images inter-cluster distances higher. Maximum in clusters V and VI, respectively high level of rice depends. Climatic condition of this district was performed using DUS testing protocol other factors. Italian rice cultivation is done using high yielding varieties, which are the bone. Weedy rice ( Oryza satıva L. ) is one of the variance of Nepal 73.8 % the! 90 % of the very few crop species endowed with rich genetic diversity among the studied.

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