Title: Heterosis for Yield in Heat Tolerant Tomato Lines
Abstract: Studies on heterosis using heat tolerant lines in tomato (Solanum lycopersicum L.) were carried out through a set of 12 x 12 set of diallel cross excluding reciprocals. The resulting sixty six F1 hybrids along with two standard checks were tested for heterosis. Useful heterosis was observed for almost all the characters studied. Among 66 crosses studied for number of flowers per cluster, 5 crosses showed significantly positive heterosis over Punjab Upma and 17 crosses, over check TH-1. For harvesting span, the cross combination P8 x P11 took longest duration of 31 days and showed 10.71 and 19.23 per cent heterosis over Punjab Upma and TH-1, respectively. The cross combination P6 x P9 showed maximum heterosis of 16.51 per cent, for days from fruit setting to turning stage over hybrid check TH-1. The cross combination P1 x P2 had maximum marketable yield of 0.97 kg/plant and it showed, 212.90 and 340.91 per cent increase over standard checks, Punjab Upma and TH-1, respectively.
Publication Year: 2009
Publication Date: 2009-01-01
Language: en
Type: article
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Cited By Count: 4
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