Abstract

                                The nature of gene action for yield and its component characters in tomato under moisture stress was studied in a six parent full diallel cross: Presence of additive gene action for days to flowering and number of fruits set per cluster and additive and non-additive genetic systems for number of fruits per plant, mean fruit weight and yield per plant was indicated. High heritability estimates were observed for days to flowering, mean fruit showed partial dominance. All the traits except number of fruits per plant showed partial dominance. Asymmetrical distribution of genes with positive and negative effects was noticed. The number of genes controlling inheritance of the traits was established

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