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 |
The one hundred and seventy advanced homozygous lines were undertaken for estimates of mutual correlations vis-a-vis path analysis for grain yield with ten morphological traits Coefficient of variation being in the range of 1.40- 8.34 indicated adequacy of material and the traits studied for further estimation of genetic variability parameters. Mean squares due to genotypes were highly significant for all the characters observed, indicating the presence of adequate genetic variability for all the character studied. Heritability (broad sense) estimates were quite high for grain yield per plant followed by hundred grain weight and number of effective tillers per plant. The genotypic correlation coefficient is higher in magnitude as compared to that of respective phenotypic correlation coefficient and hence indicated the strong inherent nature of the characters studied. Improvement can be realized to an extent ranging from 66 to 30 per cent for grain yield per plant, tillers per plant, hundred grain weight, and grain weight per spike. Highly significant and positive association was observed between grain weight per spike and spike weight. The high direct effects in positive direction for the dependent variable i.e., grain yield per plant was recorded for number of effective tillers per plant followed by number of grains per spike, and hundred grain weight. In general, the indirect effects of the characters towards grain yield per plant were low, but the main contributors are tillers per plant, number of grains per spike and hundred grain weight. The characters viz., number of grains per spike, hundred grain weight, number of effective tillers per plant coupled with spike weight and grain weight per spike exhibiting strong positive association with grain yield indicate that selection based on these morphological traits could definitely lead to improvement in grain yield.
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