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Genetics of cultivated cucurbits



Genetics of cultivated cucurbits



Jour Heredity 35(4): 122-128



The literature is reviewed and new data are presented on 16 characters. The gene pair Cc, canary-yellow flesh color, in the watermelon is reported for the first time. Canary-yellow is dominant over pink flesh color, and was identified from the commercial var. Honey Cream. It probably is linked with the fruit-shape gene O, making the 4th identified point on what is probably the linkage system A[long dash]O[long dash]C together with a weight gene. Several pairs of genes appear to be involved in an inheritance of disease resistance similar to that reported for cucumber mosaic virus. About 18 classifiable qualitative characters are recognized in the cucumber, Cucumis sativus. Because of identical linkage x2 values and identical values for 5 gene interactions involving F and S, it is suggested that there is only 1 gene for spine number (S) and spine coarseness (F) instead of the 2 proposed by Hutchins. Crosses between a hermaphrodite muskmelon from China and the usual monoecious and andromonoecious types gave data on which to base a genetic interpretation of sex inheritance. Monoecious (AG) is dominant while hermaphrodite (ag) is double recessive. The other genotypes are Ag, gynomonoecious and (aG) andromonoecious.

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Accession: 013389624

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