GENETIC ANALYSIS FOR SEED CONTENT, FRUIT YIELD AND ITS ASSOCIATED TRAITS IN BRINJAL (Solanum melongena L.)
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Date
2016-12
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University of Horticultural Sciences, Bagalkot (COLLEGE OF HORTICULTURE UHS CAMPUS, GKVK POST, BENGALURU)
Abstract
Investigation on “Genetic analysis for seed content, fruit yield and its associated traits in brinjal (Solanum melongena L.)” was undertaken during 2013-2016 at the College of Horticulture, UHS Campus, Bengaluru. High GCV and PCV were observed for number of flowers/ cluster, number of fruits/ cluster, fruit length, fruit diameter, average fruit weight, fruit volume and number of fruits/ plant. Thirty six hybrids were developed by crossing nine parents using half diallel mating design. Combining ability analysis revealed non-additive gene action for majority of the characters as SCA variance was greater than the GCA variances except for number of flowers/ cluster. Parents viz., IIHR-3, Arka Shirish and Kuduchi local were good general combiners and possess additive genes for fruit yield/ plant and Arka Shirish, Swetha and L-2863 for pulp to seed ratio, as they showed significant GCA effect in positive direction. Erangere local x Swetha and Haritha x Arka Anand showed high SCA effect for fruit yield/ plant and highest positive SCA was observed by Swetha x Haritha indicating non-additive gene action for pulp to seed ratio. The hybrids viz., Kuduchi local x L-2863, Erangere local x Swetha and Haritha X Arka Anand could be exploited for commercial value as they have manifested significant heterosis over standard check (MEBH-9) for fruit yield/ plant. Swetha x Haritha, Kuduchi local x Swetha and Arka Anand x Arka Shirish exhibited highest magnitude of positive heterosis over commercial check MEBH-9 for pulp to seed ratio. Predominant dominance and dominance based gene actions were observed for fruit yield/ plant in Haritha x Arka Shirish. Both additive and non-additive gene actions appeared to be important for fruit yield/ plant in Kuduchi local x Haritha and for pulp to seed ratio in both Haritha x Arka Shirish and Kuduchi local x IIHR-3.