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Diallel analysus of the combining ability of tomato cultivars

The tomato (Lycopersicon esculentum Mill.) cultivars Ângela I.5100, Floradade, IPA-05, IPA-06, Jumbo and Santa Clara and their diallelic crosses were evaluated for commercial fruit weight (CFW), average thickness of the pule (ATP), average number of loculi per fruit (NLF) and content of soluble solids (CSS). The objective was to identify the superior progenitors and the promising hybrids for plant breeding programs. The diallel analysis based on Griffings Methodology, showed a prevailing non-additive genic effects for CFW, the opposite being observed for ATP meanwhile NLF showed an equal value for additive and non-additive effects. Based on general combining ability estimates, the cultivars Ângela I.5100, IPA-05 and IPA-06, are indicated to plant breeding programs.

tomato; Lycopersicon esculentum Mill.; diallel analysis; combining ability; heterosis


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