Nature of gene action for yield and yield attributing traits in okra [Abelmoschus esculentus (L.) Moench]

Nature of gene action for yield and yield attributing traits in okra [Abelmoschus esculentus (L.) Moench]

2012

E07713

A line x tester analysis in okra was carried out with 20 parents (17 lines x 3 testers) and their 51 F1's, in two different seasons. For most of the traits dominance gene action was more important than additive gene action especially fruit yield per plant, plant height and number of seeds per fruit showed slight over dominance. During rainy season crop, the degree of dominance was maximum for days to first flowering (7.59) followed by plant height (7.28), number of branches per plant (4.69) and minimum was found in fruit length (-3.91). However, during summer season, all of the traits expressed more dominance genetic component of variance as compared to additive variance except for fruit diameter (0.01) and number of ridges per fruit (0.01) i.e. equal to dominance variance. The degree of dominance ranged from -3.79 (fruit length) to 8.34 (number of fruits per plant). In the crosses where dominance gene effect is significant heterosis breeding would be most effective.

7(2):321-323, ASIAN JOURNAL OF HORTICULTURE

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