Abstract
Abstract The variability, mode of inheritance, and gene action for tomato fruit weight was studied in a cross of 2 divergent lines, Mo. Accession 223 (a selection of USD A P.I. 272689), and 1-417-1. The data indicated that more than 10 gene pairs, and possibly as many as 20, differentiated the parents for fruit weight in this cross. Partial dominance of small fruit weight genes was shown. No evidence of epistatic interaction was found. Gene action was largely geometrically cumulative. Heritability estimates in the broad sense was 29%. Little additive genetic variance was detected.
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