Combining Ability Analysis for Yield and its Related Traits in Tomato (Solanum lycopersicum L.)

A set of 40 genotypes including seven females, four males, their 28 single F₁ hybrids and one standard check (Abhinav) were sown at Vegetable Research Scheme, R.H.R.S., NAU, Navsari. During to study the combining ability in tomato (Solanum lycopersicum L.) for 10 characters following Line ´ Tester mating design. High general combining ability observed in parent's of viz., JTl-12-04, JTL-12-10, JTL-12-12, JT-3 and AT-3 for one or more yield contributing traits. In hybrids, JTL-12-12 × JT-3, NTL-1 × AT-3, JTL12–12 × GT-2, NTL-1 × JT-3, JTL-12-11 × GT-2, JTL12–10 × GT-2, JTL-12-04 × AT-3 and JTL-12-04 × GT-1 manifested high heterosis coupled with high SCA effects for fruit yield. Combining ability analysis revealed that magnitudes of SCA variances were higher than GCA variances for all the characters under study, which indicated that preponderance of non-additive gene action for inheritance of all the traits. Thus, further breeding programme exploitation of heterosis is feasible.