Author(s):

V Mythili, B Pradhan, Manasi Dash and DN Bastia

Abstract: In the present study wide genetic variability among the selected genotypes was recorded which was supported by mean performance, variance and range. The phenotypic coefficient of variation was found to be higher than that of genotypic coefficient of variation for all the characters studied among the set of materials. The estimates of PCV and GCV were lowest in case of days to 50% flowering (4.84 and 4.61) and cellulose (43.28 and 42.62) was found to be highest. Characters like panicle length (69.76%) exhibited moderate heritability (40%-70%) and all other characters exhibit high heritability suggesting effectiveness of selection on the basis of phenotypic expression of the traits. High heritability accompanied with high genetic advance observed in number of fertile grains per panicle, panicle weight, cellulose and single plant yield indicate that additive gene effect has played a major role in the expression of these characters and simple selection will improve these characters. The high estimates of correlation at phenotypic and genotypic level was between yield and number of fertile grains per panicle. The predicted genetic advance from different indices ranged from 4.53 q/ha in one-character index to 4.79 q/ha in eleven character index and it varied from 100.00 % in index 1 to 105.7 % in index 11 in terms of relative efficiency. Thus, in terms of predicted genetic advance, the results of the present study brought out superiority of eleven character index over direct selection on yield per se.

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