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|Authors:||Sidar, Hemant Kumar|
Saxena, Ritu R.
|Title:||CHARACTERIZATION OF DUBRAJ RICE ACCESSIONS FOR MORPHOLOGICAL AND QUALITY CHARACTERS|
|Publisher:||Indira Gandhi Krishi Vishwavidyalaya, Raipur|
|Agrotags:||DUBRAJ RICE ACCESSIONS, MORPHOLOGICAL|
Genetics, Plant Breeding
|Abstract:||The present investigation was carried out at Instructional cum Research Farm, College of Agriculture, IGKV, Raipur (Chhattisgarh) during kharif 2013 to study genetic variance, correlation coefficient, path coefficient, quality analysis and molecular analysis among 218 Dubraj rice accessions along with standard check varieties namely Vishnu bhog, Dubraj, Improved Pusa Basmati, Indira Sughandhit Dhan 1, Gopal bhog. The results of the analysis of variance indicated that the mean sum of square due to accession were significant and highly significant for most of the characters except leaf blade length, leaf blade width, total tiller per plant and filled grain per panicle Comparatively high magnitude of coefficient of variation was observed, number of filled grains per panicle, number of unfilled grains per panicle, seedling height and grain yield per plants. Moderate magnitude of coefficient of variation was observed in number of total tiller per plant and number of effective tiller per plant. Low magnitude of coefficient of variation was observed for leaf blade length, leaf blade width, plant height, 50% flowering, days to maturity, hundred seed weight, and panicle length. Estimated correlation coefficient between all possible characters of 218 accession shows that number of filled grain per plant had shown highly significant and positive correlation with total number of tiller per plant, number of effective tiller per plant and significant positive association with days to maturity and days to 50 percent flowering. Whereas, it showed significant and negative correlation with plant height. Path analysis shows that effective tiller per plant had highly significant and positive association with grain yield per plant. This indicates that relations between both the characters are true, total number tiller per plant showed a low negative direct effect of on grain yield per plant but it had significant positive association with grain yield per plant. This may be due to high positive indirect effect via effective tiller per plant. Panicle length showed low positive direct effect of on grain yield per plant, number of filled grains per panicle showed a moderate positive direct effect of on grain yield per plant. The accession including in this study were subjected to PCR based Simple Sequence Repeat (SSR) technique to direct the polymorphism. Seven (7)rice microsatellite (RM) primers viz., RM-17, RM-84, RM-243, RM-435, RM-55, RM-231 and RM-3825 gives clear-cut single distinct band to detect polymorphism. Dendrogram indicates that there low level of similarity in between accession and showed two major cluster .A and B consisting of 24 and 24 accession respectively. The major clusters ‘A’ and ‘B’ were isolated at 0.52 similarity coefficient. D: 26 and D: 76 are most similar which showed 1.00 similarity coefficient.|
|Subject:||Genetics and Plant Breeding|
|Appears in Collections:||Theses|
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|HEMANT KUMAR SIDAR 2014.pdf||CHARACTERIZATION OF DUBRAJ RICE ACCESSIONS FOR MORPHOLOGICAL AND QUALITY CHARACTERS||5.02 MB||Adobe PDF||View/Open|
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