Estimation of heterosis, combining ability and gene action for productivity traits in tomato (Solanum lycopersicum L.)

Teja, S.; Masaye, S. S.; Patel, A. I.; Swetha Priya, D.; Devika, J.

doi:10.37992/

Estimation of heterosis, combining ability and gene action for productivity traits in tomato (Solanum lycopersicum L.)

Teja, S.

https://orcid.org/0009-0008-0249-8750

Masaye, S. S.

https://orcid.org/0009-0005-3280-5828

Patel, A. I.

https://orcid.org/0000-0002-1570-9499

Swetha Priya, D.

https://orcid.org/0009-0008-5388-3333

Devika, J.

https://orcid.org/0009-0001-8138-9032

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Abstract

The study aimed to evaluate the potential of seven parents and twenty-one hybrids for yield and associated traits developed through half diallel mating design at Vegetable Research Farm, NAU, Navsari during Rabi 2024-25. Analysis of variance revealed that mean sum of squares were highly significant for all the traits indicating both additive and non-additive gene action. Standard heterosis was estimated using Arka Rakshak as check and hybrids GP28 × GP29, GP17 × GP29 and GP28 × GP64 exhibited superior standard heterosis for fruit yield per plant. Combining ability analysis by using Griffing’s Method Ⅱ, Model Ⅰ which revealed GP28, GP29 and GP17 as good general combiners, while hybrids GP28 × GP29 and GP17 × GP64 were identified as good specific combiners for yield and associated traits. These results suggest that the identified hybrids are promising for commercial cultivation after multi‑location evaluation.

Keywords Tomato, standard heterosis, combining ability and gene action

Published 06/08/26

DOI https://doi.org/10.37992/