Measuring Of Heterosis , Gene Action and Heritability In Okra (Abelmoschus esculentus L.) | ||
| Journal of Tikrit University For Agriculture Sciences | ||
| Article 1, Volume 14, Issue 2, September 2014, Pages 188-194 | ||
| Authors | ||
| Ammar Hashim Saeed; Majd Khleef AL-Kummer; Akeel Hussein AL-Asie | ||
| Abstract | ||
| Forty nine genotypes of okra including seven parents and their 42 hybrids were tested by using randomized complete block design with three replicates for testing of heterosis, gene action and heritability, these genotypes were crossed in all possible combinations (Full Diallel Cross) during 2011 and 2012 seasons in the vegetable field , Department of Horticulture and Landscape Design, College of Agriculture and forestry, Mosul University. The result of statistical analysis showed that F1's exhibited significant heterosis for all characters . The hybrid(7×4) gave the negative value for number of days to flowering (-15.33) . The hybrid(5×7) gave the highest heterotic value for the number of flowering and number of fruit per plant and total yield and early yield (92.53),(92.33), (2.18), (46.70) respectively. The hybrid (3×4) gave the highest value for the fruit length (1,38) , the hybrid showed(×26) stem highest value for the fruit diameter and the hybrid(2×6)gave the highest value for the early yield (2.75) . The hybrid(2×1) ,(5×1) showed highest value for the number of seed / fruit and total seed yield (15.33) ,(9.23) respectively . A significant additive genetic variance was show for the number of flowering and number of fruit per plant , early yield, total seed yield and total yield . Broad and narrow sense heritability were high for the number of flowering and number of fruit per plant , early yield and total yield which indicate additive gene action for these characters . Average degree dominance was greater than one for number of days to flowering, number of flowering and number of fruit per plant, total yield, early yield, seed number, total seed yield and fruit weight , indicating over dominance control of these traits . | ||
| Keywords | ||
| Okra; Heterosis; Gene action | ||
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