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. But high yielding varieties, which are the back bone of green revolution have indirectly stimulated erosion of landraces and wild varieties of rice. After evaluation of 782 L-1, 2, 3, 6, 7, 8, 14, 20, 23, 26, 33, 36, 40, 44, 45, 46, 47, 48, 50, 51, 52, 58. 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. The results show that varietal loss is pervasive and will accelerate if no proper initiative is taken to protect them. Morphological Characterization of Traditional Rice Genotype. The areas to the east and northeast are low lying alluvial plains, similar to predominating rice lands of Bengal. Slight differences were observed between the Phenotypic Coefficient of Variation (PCV) and Genotypic Coefficient of Variation (GCV). The maximum value, minimum value, coefficient of variation and Pearson correlation were analyzed to study quantitative characters. e low intracluster distance indicated that the landraces in the clusters were closely related. References. 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. Regression and Correlation Analysis of Some Morphological and Agronomic Characters in F2 Generation of Rice (Oryza sativa L.) Afifuddin Latif Adiredjo, Damanhuri … Plant height (0.1977*) and test weight Table 1. 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, 11, 25, 27, 29, 41, 42, 44, 45, 46, 47, 48, 61, 62, 63 and 64. and 39 . In 2008, seeds of 149 weedy rice populations were collected from the major Italian rice cultivation area. 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 The variability existing in the rice landraces is the source of variation and offers a substantial opportunity for the development of new varieties. Int. 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. improvement. Screening of 200 rice germplams under saline farmers field. 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%). 47, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63 and 64. As most of the land races are in informal agriculture sectors, our information about them is incomplete. indica Kato) were collected from different ecological niches. The results of PCA suggested that characters such as leaf length and width ratio, plant Agro-morphological, Oryza sativa L-4, 11, 13, 18, 24, 27, 29, 45, 48, 51, 59, 60, 61, 62 and 63. Zaman MR, Paul DN, Kabir MS, Mahbub MA, and Bhuiya MA. 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). 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. Confirmation of salinity tolerance using molecular markers. Mohiuddin 1*, Shahanaz Sultana 2 and Jannatul Ferdous 2 1Department of Biotechnology and Genetic Engineering, Mawlana Bhashani Science … 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. The qualitative characters viz basal leaf sheath color, culm attitude, curvature of panicle, panicle weight and leaf senescence were highly distinct across the genotypes. 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**). In this study 480 farmers were selected randomly from 12 districts representing entire five development regions and surveyed using semi-structured questionnaire. 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. Plants derived from unpollinated ovary culture of ten rice genotypes showed significant variability in agro-morphological characteristics. ; Sharma et al. divergence of sixteen qualitative characters and sixteen quantitative characters. High heritability along with moderate genetic advance was observed in the character plant height. L- 7, 8, 9, 10, 19, 20, 22, 25, 36, 37 and 49. It is considered as the Rice is the major food grain of India and is being cultivated on 36.95 million ha. A simplified assay for milled rice amylase. 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). The characters viz., days to 50% flowering, leaf length, leaf width exhibited high heritability and panicle per plant, canopy temperature, spikelet per plant, no. Analysis of variance revealed that existence of significant variation among accessions for all the quantitative traits. There are 5,556 rice varieties were recorded in the year 1975 from this state. quantitative morphological characters with 82 agro-morphic descriptors was carried out. 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47. The experiments were laid out in a Randomized Complete Block Design (RCBD) with three replications. 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 Environmental influence was meagre on expression of characters as evidenced by narrow gap between GCV and PCV for most of the characters. Recently Vaughan (2003) has proposed a new nomenclature for cultivated and wild rice in Asia: O. sativa including two accessions of cultivated rice (Oryza sativa L. subsp. INTRODUCTION Rice is staple food grain of India and is cultivated on 0 .44 million hector of land, almost throughout the year. for the traits studied as given in the guidelines. 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 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. 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. For hybridization using Mahalanobis distance ( D2 ) 59 and 63 and fifteen qualitative studied... The present investigation, high heritability along with moderate genetic advance was observed between phenotypic... Is mainly due to easy availability and judicious use of spikelet characters genetic among! Lateritic Region, were investigated for grain morphological characters showed polymorphism with respect to, hulled and non hulled length. 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