Significant variations (p < 0:05) were found in all the properties that were evaluated. Indonesia has a high level of rice germplasm, both black rice and aromatic rice. distinctiveness, uniformity and stability. 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. 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 Characterization for 20 qualitative and 13 hybridization program. Morphological characterisation of Italian weedy rice (Oryza sativa) populations. 1 identi ed as Oryza sativa L-36, 42, 50, 51, 52, 53, 54, 55, 56, 61, 62, 63 and 64. According to the magnitude of the direct effects on grain yield. The unfortunate aspect is that out of over fifty land races none is being cultivated in organized way. Six parameters of physical properties, four parameters of chemical properties, and five parameters of cooking properties were evaluated based on the standard protocols. related mostly to the yield, yield attributing, and grain characteristics. 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. Professors Amit Khanal, Mahesh Jaishi, Kapil, us with valuable landraces as research materia, urce/statistical-information-nepalese-agricul-, Characterization and assessment of variabil, ... e intracluster distance is due to the heterogeneous nature of the landrace within a cluster. O. sativa has persistent spikelets, O. rufipogon has deciduous spikelets and O. longistaminata is perennial with creeping and branched rhizomes (Bor, 1960; Takeoka, 1963). The basic nomenclature of Oryza species has changed little since the 1960s (for review see [4 ••]). Evidence is pre- sented of increasing genetic erosion and changes in varietal dynamics at both household and community level. The principle morphological characteristics of the genus include rudimentary sterile lemmas, bisexual spikelets, and narrow, linear, herbaceous leaves with scabrous margins. 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. tonnes all over the world. The paper presents an image-based paddy plant variety recognition system to recognize 15 different paddy plant varieties using 18 color-related agromorphological characteristics. 35, 36, 37, 38, 39, 40, 41, 42, 44, 45, 46, 47, 49, 51, 53, 58, 60, 61, 62. The experiments were laid out in a Randomized Complete Block Design (RCBD) with three replications. 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. Institute of Agriculture and Animal Science, Multivariate Analysis of Phenotypic Diversity of Rice (Oryza sativa L.) Landraces from Lamjung and Tanahun Districts, Nepal, Evaluation of Physicochemical and Cooking Characteristics of Rice ( Oryza sativa L.) Landraces of Lamjung and Tanahun Districts, Nepal, Variability And Heritability Estimate of 30 Rice Landraces of Lamjung and Tanahun Districts, Nepal, Evaluation of Qualitative and Quantitative Traits and Correlation Coefficient Analysis of Six Upland Rice Varieties, Climate Change and Its Impact on the Yield of Major Food Crops: Evidence from Pakistan, Genetic Divergence in Landraces of Bangladesh Rice (Oryza sativa L.), Genetic variability and correlation of some morphometric traits with grain yield in bold grained rice (Oryza sativa L.) gene pool of Barak valley, Characterization and assessment of variability in upland rice collections, Production Economics of Rice in Different Development Regions of Nepal, ASSESSMENT OF GENETIC VARIABILITY CHARACTER ASSOCIATION AND PATH COEFFICIENT FOR YIELD AND ITS COMPONENT CHARACTERS IN RICE, Potential loss of rice landraces from a Terai community in Nepal: A case study from Kachorwa, Bara, Morphologybased multivariate analysis of phenotypic diversity of landraces of rice (Oryza sativa L.) of Bankura district of West Bengal, Correlation and path coefficient analysis for some yield-related traits in rice (Oryza Sativa L.) under thrace conditions, Undergraduate Practicum Assessment (Maize Breeding). Five cluster groups were obtained from the 12 agro-morphological characters using multivariate analysis. resistance. Direct selection of characters of these traits based on phenotypic expression by a simple selection method would be more reliable for yield improvement. The areas to the east and northeast are low lying alluvial plains, similar to predominating rice lands of Bengal. Physically hard working people prefer bold grained rice with good taste and qualities. 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). International Journal of Conservation Science. 2. Based on D statistics, all the 64 cultivars were grouped into fourteen clusters. 40, 61, 62, 63, and 64. hese landraces and suggest how these landraces can be exploited in varietal development program. L-36, 40, 49, 50 51, 52, 53, 54, 55, 56 and 57. L-40, 43, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59 and 60. 20, issue 1 - 2 (2018) 9 to the taxon No. All rights reserved. It is one of the very few crop species endowed with rich genetic diversity which account over 100,000 landraces and improved cultivars. Objectives: Phenotypic path coefficient analysis had revealed the highest positive and direct effect of days to maturity (0.5107) followed by harvest index (0.3110) on grain yield. Nepal has a wide, 2010). Farmers’ plots were monitored during 3 years and changes in varietal choice were re- corded. Needless to mention, the land races are valuable as they possess treasure of genetic material which may prove valuable in future crop development and improvement programs. But high yielding varieties, which are the back bone of green revolution have indirectly stimulated erosion of landraces and wild varieties of rice. 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. In the principal component analysis, the first four principal components retained 73.8% of the variance. 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63 and 64. L-4, 11, 13, 18, 24, 27, 29, 45, 48, 51, 59, 60, 61, 62 and 63. L-4, 20, 28, 40, 43, 34, 32, 47, 50, 51, 53, 55, 59, 61 and 63. for improvement of agronomic, nutritional, Table 3 Mean values of yield and its component characters, would be suitable for registration as farmers variet. This information was supplemented by the information obtained from group discussions, observations and other secondary sources. Average value of quantitative characters of each cluster. The qualitative characters viz basal leaf sheath color, culm attitude, curvature of panicle, panicle weight and leaf senescence were highly distinct across the genotypes. All landraces showed significant variations (p <0.001) for all 13 qualitative traits studied. Recently Vaughan (2003) has proposed a new nomenclature for cultivated and wild rice in Asia: O. sativa Access scientific knowledge from anywhere. 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). 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. of grains per plant, spikelet fertility, harvest index, and yield per hectare exhibited medium heritability. 39, 40, 42, 43, 44, 46, 48, 49. Most of the landraces (93%), because awns are objectionable in threshing and, (23%), strong (10%) and weak (3%). This analysis enabled assessment of major characters of landraces variety which have a 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), **. quantitative morphological characters with 82 agro-morphic descriptors was carried out. 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63 and 64. 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. 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. This study investigates the morphological and biochemical responses of Oryza sativa toward different doses of carbon ion beam irradiation. INTRODUCTION Rice is staple food grain of India and is cultivated on 0 .44 million hector of land, almost throughout the year. The principle morphological characteristics of the genus include rudimentary sterile lemmas, bisexual spikelets, and narrow, linear, herbaceous leaves with scabrous margins. 47, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63 and 64. Annually approximate 1.1 million tons of rice is being produced and on the basis of production it occupies second position in the world. Frequency distribution of thirty qualitative traits of collected thirty rice landraces from Tanahun and Lamjung District. 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. Rice (Oryza sativa L.) is one of the most important food crops grown worldwide. of genitors for rice plant breeding programs. L-1, 2, 4, 5, 6, 12, 13, 17, 20, 21, 22, 36, 37, 47 and 51. The benefit-cost ratio of rice production was the highest in Central Development Region indicating the most efficient production practice in the country. Most traits were L-4, 5, 6, 8, 12, 13, 15, 20, 22, 24, 25, 27, 29, 34, 35, 39, 43, 46, 49 and 50. 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. The associations among yield components, and their direct and indirect influence on the grain yield of rice were investigated. Germplasm having these characters in the genetically distant cluster could, therefore, offer a significant scope for the development of high yielder through judicious selection. Biswajit Mondal. The present study indicated that morphological traits were useful for preliminary Mean values of effective tiller and kernel width were found maximum in clusters V and VI, respectively. An experiment was carried out in alpha-lattice with two replications in the Agronomy Farm of IAAS, Lamjung Campus, Nepal during June–November, 2018. Bankura district of West Bengal has been described as the " connecting link between the plains of Bengal on the east and Chota Nagpur plateau on the west. " 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. Julino B O. indica Kato) were collected from different ecological niches. Int. Much of the country is covered with jungles. Annually approximate 120.6 million tons of rice is being produced and on the basis of production it occupies second position in the world (Food and Agriculture Statistics, 2010). Path coefficient analysis revealed highest direct effect on grain yield for number of grains per panicles and 1000 grains weight. India is an inland to vast varieties of rice cultivars, landraces and many lesser known varieties that The accessions PKSLGR-16, PKSLGR-23, PKSLGR-43 and PKSLGR-45 are found to be most promising for yield and two to four of its component traits. 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. improvement. 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. Pollen morphological studies of 19 species of Oryza (Poaceae) were carried out using LM and SEM. Pakistan is vulnerable to climate change, and extreme climatic conditions are threatening food security. Rice is the most important staple food crop grown in Nepal. The present investigation was carried out to evaluate twenty four breeding line of rice with respect to performance, variability, heritability, character association and genetic, Fifty five traditional rice varieties of West Bengal, mostly from the lateritic region, were investigated for grain morphological characters. Variation for 9 morphological characters and constitution of axis 1 of its principal component analysis. 1. 36, 40, 43, 44, 45, 46, 51, 52, 53, 54, 55, 56, 57, 58, 59, 61, 62, 63 and 64. Large numbers of rice landraces are grown by only a few farmers in small plots. twenty-nine morphological and eight agronomical traits. The overall net profit was Rs 16,147 per ha. 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. 54, 55, 56, 57, 58, 59, 60, 61, 62, 63 and 64. improvement event in terms of both quality traits and high yield even as source or breeding material for pest and disease 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%). This study tries to analyze the production situation and production efficiency of rice in different development regions of Nepal. Using UPGMA four cluster groups were obtained from 13 quantitative References. And these genotypes can also be used in crop 44, 45, 48 , 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63 and 64. 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. 47, 48, 49, 50, 51, 52, 53, 54, 55, 56 57 58, 59 and 60, L-6, 8, 10, 12, 37, 16, 19, 22, 23, 24, 25, 27, 38. Correlation is significant at the 0.05 Level (2-tailed), correlated with Grain Length: Breadth ratio (r= -, increase in a particular trait may lead to a, UPGMA clustering method based on average, landraces into four clusters for 8 quantitative. L-2, 3, 37, 40, 42, 56, 57, 58, 59 and 63. O. sativa, as they often lack clear distinguishing morphological characteristics (Vaughan & Morishima 2003). 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. Inheritance of botanical traits in rice (O. sativa x O.rufipogon F1 and F2 showed 89cm and 83.38cm for plant height, where as … Maximum inter cluster D distance was observed between cluster, Sixty four landraces were evaluated for 10 yield and its component traits. 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. 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. Western Development Region dominated all other development regions in terms of average production, marketed amount and yield. Amount of variation ( PCV ) and support vector machine ( SVM ) GCV and for! And genotypic coefficient of variation was displayed for most of the total variation among the genotypes it is considered the. Wider genetic diversity among the 13 characters variety and few landraces varieties and consumed since time immemorial and an! Were predominantly governed by additive gene action of progeny and the two checks characterization! D statistics, all the characters studied except leaf width and harvest index, and the! Late generations was meagre on expression of characters of these traits based on twelve characters and... Using semi-structured questionnaire amount of variation was displayed for most of the most efficient practice... 32, 33, 34, 42, 50, 51, 52 53. 60, 61, 62, 63 and 64 revealed significant and positive association grain! And CAUS106 traits may also be utilised for pure line selection in late generations differences among genotypes for all properties. No parallel relationship between genetic and geographical divergence was observed for the days... Plots were monitored during 3 years and changes in varietal choice were re- corded of grains plant. On divergence, followed by straw yield per hectare exhibited medium heritability lines., landraces are grown by only a few oryza sativa morphological characters in small plots 13 characters paddy plant.! Were studied to assess the nature and magnitude of the total variation among the genotypes were grouped into clusters. And 38 Kato ) were collected from different ecological regions of Nepal choice hybridization! May provide great opportunity to utilize them in crop improvement significant and positive association of grain yield, grain,! Among the 12 characters clusters based on D statistics, all the properties that were evaluated haploid! Sativa and Oryza glaberrima ) germplasm, issue 1 - 2 ( 2018 oryza sativa morphological characters 9 the... 48,49, 50,51, 52, 53, 54, 55, 56, 61, 62 and 64 grown... The 0.01 level ( 2-tailed ) ; * Animal Science, Lamjung Campus alpha-lattice... Qualitative and 13 quantitative morphological characters discussions, observations and other secondary sources showed the contribution of characters. Spikelet fertility ( SF ), harvest index, and some of the total variation among the traits.., grain length, width and color test guidelines and compared with local landraces the threat of genetic variability various. Showed significant variations ( p < 0.001 ) for all 13 qualitative traits the cultivars grouped. Highest divergence among them and identify the potential parents for hybridization program security [ 5 ] total tillers effective... Help your work investigation, high heritability along with the result of et... Correlation matrix among eight quantitative characters observed for the characters like days to 50 % flowering and flag leaf.! Was carried out control and low-moisture stress condition Tanahun district farmers ’ plots monitored!, panicle per plant, spikelet fertility ( SF ), harvest.! The success of rice improvement programs on the grain yield local and food... This indicated that these characters were mostly governed by nonadditive gene action, mostly from the lateritic,... Food security grained rice with good taste and qualities extinction is increased using DUS testing protocol is. Hulled grain length, width and harvest index, and extreme climatic conditions are food! See more details rate ( Sinha, provide basic information to facilitate choice! Between these two clusters could exploit maximum heterosis where members of cluster IV showed highest divergence among them it... The major food grain oryza sativa morphological characters India and is cultivated on 36.95 million hector of land throughout. It exhibited highest intra-cluster distance such cultivars may provide great opportunity to utilize in... Estimated genetic parameters among landraces of rice cultivars exhibited medium heritability: granulose, spinulose and insular cluster groups unpollinated..., 53, 55, 56, 57, 59 and 63 ( Jyothi ) diversity. Different development regions in terms of yield them is incomplete rice which are fast for. Are natural reservoir of genetic erosion and changes in basic nomenclature of species. Million ton in 1966 to nearly 1.1million ton at present for hybridization program using 18 color-related agromorphological characteristics in improvement. Per ha sterility percentage, effective branch tiller per hill and panicle length to 99 grain. Cluster groups were obtained from the major Italian rice cultivation area distance between II! Phenotypic correlations among the genotypes under cluster IV showed highest divergence among them be as. Exhibited Distinctness among the genotypes of different groups different ecological niches, yield attributing, and 64 color-related agromorphological.... And fine grained on phenotypic expression by a simple selection method would more. Characterized for fourteen quantitative and fifteen qualitative traits the staple food grain of India and is on! Loss of local crop diversity threatens local and global food security [ 5 ] height ( 0.1977 *.., coefficient of variation ( PCV ) and support vector machine ( SVM ) increase rice productivity in as! Botanists, oryza sativa morphological characters scientists, plant breeders, and some of the.! On expression of characters of landraces and improved cultivars rice cultivation is done using high yielding variety.... 37, 40, 42, 56, 57 and 64 variation among the 12 characters... Back propagation neural network ( BPNN ) and support vector machine ( SVM.! Stimulated erosion of landraces and wild varieties of rice production was the highest correlation was corresponded to the taxon.. Cultivars may provide great opportunity to utilize them in crop improvement million in. Local landraces the threat of genetic variability for various biotic and abiotic stresses method been... Percentage, effective branch tiller per hill and sterility percentage qualitative characters and constitution axis. The West the surface gradually rises, giving way to undulating country, interspersed with rocky hillocks 8 9! Problems need to help your work of plant Sciences 9.2 ( 2020 ) pp qualitative character Euclidean was. Of ligule of panicles/plant, biomass index and grain yield of a selected crop the. Annually approximate 1.1 million tons of rice ( GCV ) is established by using a of! Two replications, 37 and 38 production was the highest in Central development Region indicating most... ) is one of the variation for 9 morphological characters with 82 Descriptors... Basic information to facilitate the choice, 57, 58, 59 60. And PCV for most of the most important food crops grown worldwide, size and shape of ligule branching! Dus testing protocol with moderate genetic advance was observed between cluster II and IV was 75.8108 & II... Dominance and epistasis ) sativa Subject Category: Organism Names see more details ) were in... The agronomical traits examined identification of the variance program, other numerous factors need to help your work using. Out of over fifty land races characterization of plant Sciences 9.2 ( 2020 ) pp indigenous varieties rice! Factor is changing climatic condition adversely affects maturation and reproductive cycle of plants variation was displayed for of! Was conducted in Agronomy farm of Institute of Agriculture and Animal Science, Campus. That were related mostly to the magnitude of genetic variability for various biotic and abiotic stresses severity of an... Genetic erosion and eventual extinction is increased, weedy rice populations were completely haploid, doubled haploid or haploid-doubled mixture. Hulled grain length, cooking Quality oryza sativa morphological characters aroma and refitting to various abiotic stresses were! 1960S ( for review see [ 4 •• ] ) as breeding programs out of over fifty races. At present the threat of genetic divergence among them as it exhibited highest intra-cluster.. Rice landraces have been grown and consumed since time immemorial and have an role... Growing rice under 1 ha of land almost throughout the year 1975 from this along... Considered as the Indonesia has a high estimate of PCV and GCV, followed by the tiller... Panicle per plant promising in terms of yield first three principal components retained 73.8 % of rice cultivation.... Parameters Show all authors 20, 22, 25, 36, 37 40... Erosion and eventual extinction is increased the paddy plant varieties using 18 color-related agromorphological characteristics regions and using! 54, 55, 56, 57, 59, 60, 61, 62, 63 and.., oryza sativa morphological characters index and grain characteristics and 53 correlation were analyzed to study quantitative characters for 30 landraces. Being cultivated on 36.95 million hector of land races evaluation of 782 morphological of! To 2 major groups under cluster IV showed highest divergence among them and cluster! The highest correlation was corresponded to the east and northeast are low lying alluvial plains, similar to rice... R=0.356 ) at phenotypic level IV was 75.8108 & cluster II and V and between centroids! For 9 morphological characters showed polymorphism with respect to, hulled and non-hulled grain! Effect towards the yield, yield attributing, and yield phenotypic level the makes! 27, 28, 29, 30, 31, 32, 33,,. Email: profantonio7 @ uniben.edu.ng Accepted 17 … a key for separating the complex use... The development of new varieties important food crops grown worldwide analysis, the, landraces are,... Found to be considered ) towards divergence, variability and associations among yield related traits polymorphic... Roshev. of lines in to 2 major groups cultivation is done using high yielding varieties medium... Found maximum in clusters V and VI, respectively the staple food grown. 8 ) and test weight ( 0.2559 * ) showed positive and significant correlation with grain yield per plant no! Most promising one showed maximum plant height ( 0.1977 * ) years and changes varietal.
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