Abstract

Abstract In the grape, 3 major fruit color phenotypes occur: white, red, and black. Segregation for fruit color is reported for 43 crosses involving 27 parent varieties. Evidence is presented which supports a 2-gene hypothesis for the inheritance of fruit color. A gene for black fruit color (B - - -) was dominant and epistatic to that for red and white fruit with red fruit (bbR—) dominant to white (bbrr). Fruit color genotypes are presented for 27 grape varieties.

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