Objectives: Rice is staple food grain of India and is cultivated on 36.95 million hector of land almost throughout the year. 38, 43, 48, 4, 10, 25, 20, 28, 33, 37, 39, 45 49,50, 51, 52, 53, 58, 59, 60, 61. This is mainly due to easy availability and judicious use of production inputs. The maximum distance was observed between CAUS122 and CAUS110 and minimum distance was observed between CAUS120 AND CAUS106. 49, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63 and 64. indica Kato) were collected from different ecological niches. This analysis enabled assessment of major characters of landraces variety which have a J. Agri. ... 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. A significant amount of variation was displayed for most of the agronomical traits examined. Keywords. Pusa Sugandha one of the most promising one showed maximum plant height at maturity, no. Keywords: Rice, agro-morphological traits, hierarchical clustering, path coefficient. e low intracluster distance indicated that the landraces in the clusters were closely related. 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. resistance. 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. The unfortunate aspect is that out of over fifty land races none is being cultivated in organized way. 47, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63 and 64. Cheng, K.S. 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. The grain yield of Bangaarugandu, Bagyajyothi, Ratnachudi, Balaji and Kempudoddi landraces was more than check (Jyothi). In this study 480 farmers were selected randomly from 12 districts representing entire five development regions and surveyed using semi-structured questionnaire. 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47. 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. Average value of quantitative characters of each cluster. Weed Research 52, 60–69. Agro-morphological, Oryza sativa f. spontanea , salient trends, Weedy rice. 1 identi ed as Oryza sativa Plant height (0.1977*) and test weight Rice is the staple food grain of West Bengal and Bankura district of this state is major producer of this grain. 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). L-4, 5, 6, 8, 11, 25, 27, 29, 41, 42, 44, 45, 46, 47, 48, 61, 62, 63 and 64. and 39 . The first three principal components explained about 86.9% of the total variation among the 12 characters. This information was supplemented by the information obtained from group discussions, observations and other secondary sources. 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. variable pair group method of the average linkage cluster analysis (UPGMA-Person) were used to The situation is fast eroding indigenous cultivars of rice. Annually approximate 1.1 million tons of rice is being produced and on the basis of production it occupies second position in the world. The upland rice accessions are natural reservoir of genetic variability for various biotic and abiotic stresses. Flag leaf, landraces had erect, 30% semi erect and 17%, landraces showed low shattering followed by, characters among 30 landraces from Lamjung. A wide variation of grain characters, like gain size and shape, anthocyanin colouration of lemma-palea and In the present investigation, high heritability associated with high genetic advance was found in the characters grain yield per hill and sterility percentage. Agro-morphological characterization of rice (Oryza sativa L.) landraces of Lamjung and Tanahun District, Nepal. 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 landraces were grouped into six clusters where 12 landraces were grouped into cluster I. 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 Distance between cluster centroids of 30 rice landraces from Lamjung and Tanahun district. The characters viz., days to 50% flowering, leaf length, leaf width exhibited high heritability and panicle per plant, canopy temperature, spikelet per plant, no. grain yield, grain length, cooking quality, aroma and refitting to various abiotic stresses. The benefit-cost ratio of rice production was the highest in Central Development Region indicating the most efficient production practice in the country. L-4, 11, 13, 18, 24, 27, 29, 45, 48, 51, 59, 60, 61, 62 and 63. 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. All landraces showed significant variations (p <0.001) for all 13 qualitative traits studied. Slight differences were observed between the Phenotypic Coefficient of Variation (PCV) and Genotypic Coefficient of Variation (GCV). The paper presents an image-based paddy plant variety recognition system to recognize 15 different paddy plant varieties using 18 color-related agromorphological characteristics. Therefore, these characters could be used as criteria for selection of genotypes with high seed yield. High level of inter-cluster distance was found between cluster II and V and between cluster I and III. Thus, as MV replace local landraces the threat of genetic erosion and eventual extinction is increased. 25,26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 38, 39 and 57. 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. List of 30 landraces collected from Lamjung and Tanahun District. distinctiveness, uniformity and stability. 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. 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. 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. Morphological Characterization of Traditional Rice (Oryza sativa L.) Genotypes of Southern Transitional Zone, Karnataka, According to DUS Test Guidelines March 2016 Germplasm consist of these characters are better choice for Among the qualitative traits variation was found to be high for leaf blade colour, leaf blade pubescence, ligule shape, panicle shattering, leaf senescence and sterile lemma colour. Keywords. National guidelines for the conduct of tests for At various times, more than 100 names have been proposed for the Oryza species, including 19 for O. sativa alone (Oka 1988; Lu 2004). Distribution of 544 varieties along the first axis of a principal component analysis of the variation for 9 morphological characters. Very small difference between GCV and PCV was observed for the characters like days to 50% flowering and flag leaf breadth. Much of the country is covered with jungles. However, the, landraces are disappearing at fast rate (Sinha, provide basic information to facilitate the choice. have been cultivated by farmers as well as local promoters. The principle morphological characteristics of the genus include rudimentary sterile lemmas, bisexual spikelets, and narrow, linear, herbaceous leaves with scabrous margins. 20, issue 1 - 2 (2018) 9 to the taxon No. In the principal component analysis, the first four principal components retained 73.8% of the variance. Future of productivity of rice solely depends upon conservation of these land races. 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63 and 64. More than 90% of cultivation is done using high yielding varieties only. 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. For Cluster analysis of qualitative traits the cultivars were grouped into five clusters based on similarity 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). L-1, 2, 4, 5, 6, 12, 13, 17, 20, 21, 22, 36, 37, 47 and 51. tillers (r=0.437) and effective tillers (r=0.356). The adoption of MV is based on higher yield potential, better market demand, better pricing and reduced lodging compared with local landraces. But high yielding varieties, which are the back bone of green revolution have indirectly stimulated erosion of landraces and wild varieties of rice. L-5, 10, 11, 12, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 62. Biswajit Mondal. 30 rice landraces on their physicochemical and cooking characteristics which aim to promote the revival of old landraces. Regression and Correlation Analysis of Some Morphological and Agronomic Characters in F2 Generation of Rice (Oryza sativa L.) Afifuddin Latif Adiredjo, Damanhuri … 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. landraces of rice cultivars of Bankura District of West Bengal. Forty eight upland rice germplasm accessions were evaluated and characterized for fourteen quantitative and fifteen qualitative traits. 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). 27, 28, 29, 32, 33, 34, 36, 37, 38, 39, 41, 42, 43, 44, 47, 48, 49, 60 and 62. It also focuses on the physiological aspect of maize crop. In this study characterization of twenty landraces of rice presently available in this district was performed using DUS testing protocol. Diversity analysis of indica rice accessions (Oryza sativa L.) using morphological and SSR markers Israt Nadia 1, A.K.M. Analysis of variance revealed that existence of significant variation among accessions for all the quantitative traits. 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. See all articles by this author. with Nagina 22 as a check variety. L-1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 16, 17, 18. This study examines the effects of climate change (e.g., maximum temperature, minimum temperature, rainfall, relative humidity, and the sunshine) on the major crops of Pakistan (e.g., wheat, rice, maize, and sugarcane). 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. It is considered as the 37, 38, 40, 41, 42, 44, 45, 47, 48, 51, 52, 53, 54, 56, 57, 58, 60, 61, 63, 64. divergence of sixteen qualitative characters and sixteen quantitative characters. Heritability estimate varied from 9.15% for panicle length to 99% grain yield. 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. Email: email@example.com Accepted 17 … The present study indicated that morphological traits were useful for preliminary 54, 55, 56, 57, 58, 59, 60, 61, 62, 63 and 64. Shobha R N, Shobha Rao L V, Viraktamath B C and Mishra B. great impact to the diversity of landraces. Analysis of variance showed significant difference among the genotypes to all the characters under both control and low-moisture stress condition. 49, 50, 51, 52, 57, 58, 59, 60, 61 and 62. 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. pp 6-13. Presently more than 90% of rice cultivation is being done using high yielding varieties only. 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. These cultivars were refined through selection depend on 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. 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. National guidelines for the conduct of tests for distinctiveness, uniformity and stability. There is an urgent need of developing HYVs to increase rice productivity in India as well as North Eastern Hill Region. The rice accessions were characterized using 28 morphological descriptors, which included 15 qualitative and 13 … Thus, the present study can be utilized for further rice improvement programs and can also be used for assessing genetic diversity among morphologically distinguishable rice landraces. Plants derived from unpollinated ovary culture of ten rice genotypes showed significant variability in agro-morphological characteristics. 1000 grains weight exhibited strong positive direct effect on seed yield, however, it contributed negatively seed yield through number of grains per panicle. Exploration and understanding diversity and variability in landraces determines the success of rice improvement programs. Whereas, maximum intra cluster distance was observed in cluster III (225.63) indicating, hybridization involving genotypes within the same cluster may result in good cross combinations. Agro-morphological, Oryza sativa Join ResearchGate to find the people and research you need to help your work. 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. 6.2 (2004): 335-339. L-1, 2, 3, 18, 34, 42, 50, 51, 52 and 53. Morphological Characterization of Traditional Rice Genotype. Weedy rice (Oryza sativa) is one of the most widespread and problematic weeds in rice cultivation; it spans the globe and can cause high yield losses. Most of the morphological characters showed variation in different accessions except leaf : collar leaf : ligule and leaf : shape of ligule. Of which cluster I (44) had more number of cultivars fallowed by cluster III (8) and remaining were solitary. Pakistan is vulnerable to climate change, and extreme climatic conditions are threatening food security. 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. Six parameters of physical properties, four parameters of chemical properties, and five parameters of cooking properties were evaluated based on the standard protocols. Exploration and understanding diversity and variability in landraces determines the success of rice improvement programs. Shannon and Simpson’s indices were calculated for 18 qualitative traits. This analysis helps to enabled pattern of variation of the germplasm of landraces of rice and identification of the major traits contributing to the diversity of landraces. 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. 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. Maximum inter cluster D distance was observed between cluster, Sixty four landraces were evaluated for 10 yield and its component traits. In addition, the yield components had positive direct effects on grain yield. Presently more than 70% of rice cultivation is being done using high yielding variety only. The climatic condition adversely affects maturation and reproductive cycle of plants. The characters sterility percentage, effective branch tiller per hill and panicle length showed significant positive genotypic correlation with grain yield per hill. 1. 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 52, 53, 55, 56, 57, 59, 60, 61, 62, 63 and 64. 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. 1985. The associations among yield components, and their direct and indirect influence on the grain yield of rice were investigated. Morphological characterisation of Italian weedy rice (Oryza sativa) populations. hese landraces and suggest how these landraces can be exploited in varietal development program. hybridization program. Physically hard working people prefer bold grained rice with good taste and qualities. The quantum of production has increased from 0.3 million ton in 1966 to nearly 1.1million ton at present. The objective of the study was to assess diversity, genetic variability, heritability, genetic advance for the yield, and yield, 'e magnitude and nature of genetic divergence play a vital role in the selection of the desirable landraces for its utilization in the breeding program. for the traits studied as given in the guidelines. of genitors for rice plant breeding programs. Directorate of Rice Research. Table 2. 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. 32, 34, 35, 37, 38, 39, 41, 42, 43, 53, 54,55,56,57,58,59,60,61,62, 63 and 64. An experiment was carried out in alpha-lattice with two replications in the Agronomy Farm of IAAS, Lamjung Campus, Nepal during June–November, 2018. 45, 47, 49, 8, 41, 19, 50, 51, 52, 53,57,61, 62, 63 and 64.
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