HETEROSIS IN DIFFERENT CROSS COMBINATIONS OF TOMATO FOR YIELD AND YIELD TRAITS | Journal of Global

Using line tester mating design, the heterotic performance of 30 tomato cross combinations involving 13 parents was estimated. The presence of genetic diversity among the characters was shown by analysis of variance, which revealed extremely significant differences for all of them (Table 6). Plant height (17.52 and 17.44 percent), number of primary branches (54.87 and 50.19 percent), number of fruit per plant (34.13 and 31.17 percent), average fruit weight (25.24 and 24.24 percent), and total yield per plant (57.63 and 62.32 percent) were all found to have highly significant positive heterosis over the better parents both years. The day to 50% blooming was found to be highly significant and negative (34.55 and 32.46 percent, respectively), both of which are favourable for early maturity. DT-2 Azad T-5, CO-3 Floradade, H-86 Floradade, and H-86 Azad T-5 were the best cross combinations for yield attributing characteristics, with the largest heterosis. Over the better parent, 28 of the 30 crosses were extremely significant for total yield/plant and 2 for number of fruit/plant.

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