Inheritance of Berry Size, Color and Flower Sex in Muscadine Grapes

Zhongbo Ren, Jiang Lu


Sixty-five F1 hybrids from Muscadine (Vitis rotundifolia) cv 'Summit' x 'Noble' were analyzed for the inheritance of flower sex, berry size and color. The segregation of flower sex followed the 1:1 Mendelian single gene ratio in perfect: female flowers. The color segregation followed 2:1:1 Mendelian ratio in black: red: bronze. These data indicate that the berry color is controlled by 2 pairs of independent genes. Berry size in 90% of the hybrids was confined within the size of their parents. Among those that were larger than parents, 85.7% were female flowers. This suggested that a large number of hybrids are necessary in order to select large fruited individuals with perfect flower in such a cross combination.

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Proc. Fla. State Hort. Soc.     ISSN 0886-7283