National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Three hundred and twenty four Traditional Rice Varieties (TRVs) were collected from different parts of Karnataka and were evaluated for grain yield and its attributes in two seasons (kharif 2011 and summer 2012) at ZARS, VC Farm, Mandya, Karnataka, India. The 14 quantitative traits studied were categorized into growth traits (days to 50% flowering, Plant height, Productive and tillers plant-1), panicle traits (panicle length, spikelet panicle-1, chaffy panicle-1 and spikelet fertility), grain quality traits (grain length, grain breadth and L/B ratio) and grain yield traits (1000 grain weight, straw yield plant-1, harvest index and grain yield plant-1). Substantial variability among the accessions for quantitative traits was recorded. The variability parameters such as mean, range, standardized range, PCV, GCV, h2(bs) and genetic advance in TRVs were estimated. The pattern of genetic diversity was estimated using model based K means clustering approach statistics and formed four distinct clusters. The quantitative traits means and variances differed significantly among the clusters. Cluster I comprised of the maximum number of TRVs (137) and cluster IV consisted of 21 TRVs. The cluster IV followed by cluster II contributed maximum mean values for many traits. These results are discussed in relation to suitable strategies to be adopted for breeding rice varieties for increased productivity.
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