Variability, heritability and transgressive segregation on yield and its components in F2 progenies of sesame (Sesamum indicum L.)
Abstract
A total of 28 F2 progenies were studied for variability, heritability and genetic advance and ten best F2 progenies were studied to assess the transgressive segregation on yield and its components based on their mean performance in sesame. High genotypic coefficient of variation was observed for seed yield per plant followed by number of capsules on secondary branches. High heritability was observed for 1000-seed weight, seed yield per plant, days to maturity, plant height, number of capsules on primary branches and harvest index. High heritability coupled with high genetic advance as per cent of mean was observed for seed yield per plant and number of capsules on primary branches number of capsules per plant and number of capsules on secondary branches indicating additive gene action for controlling these traits. Hence, simple selection can be practiced to improve these traits. For the character plant height the cross ACV 2 x DT 9-10-2-25 had shown more percentage of total transgressive segregants (TTS) and significant transgressive segregants (STS). The cross C0-1 x AVT 26 had shown more percentage of total transgressive segregants and significant transgressive segregants for the characters number of branches per plant, number of capsules per plant and seed yield per plant. For the character 1000-seed weight the cross TNAU 20 x TMV 6 had shown more percentage of TTS and STS.
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