Estimation some genetic Indices for yield and its constituent traits in okra

Abstract

The effect of Heterosis, Inbreeding, the Heritability in both Senses (Broad and Narrow) and Genetic advance for yield and its constituent traits in (6) okra hybrids produced by 4 x 4 half-diallel crossing scheme were estimated. The significant variances between the parental genotypes and their half-diallel crosses contributed to exhibition of mid-parent  and best parent hybrid vigor in F1, Istanboli x New Lathkani hybrid had significant and positive hybrid vigor for all characteristics. The study demonstrated a significant Inbreeding depression in F2. they have been observed in The hybrid red Lathkani  x New Lathkani (-40.61)for number of fruit and (-69.62) for yield. Heritability Eestimates in (Broad and Narrow) sense indicated that the most of traits studied, in the hybrids studied, had high to intermediate estimates, the narrow Heritability were (0.47-0.94)  for number of flowers, (0.58-1.49) weight of fruit and (0.21-0.96) for yield. which indicating that the additive gene effect had more importance in their inheritance which will turn on the high values ​​of Genetic Advance in the generational isolationism later in these trait.