“ROUND-LEAF” COTTON

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Abstract
In 1930 a peculiar round-leaf plant was found in a field of Express-317 cotton at Baton Rouge, La. The plant had rounded, nearly glabrous leaves and branches and other unusual characters. Bud mutations have occurred on about .5% of the plants each year since 1932. Progenies from selfed bolls on the mutant branches have produced only plants of the parental round-leaf type, which bred true in later generations. Crosses made between okra-leaf and round-leaf plants showed round-leaf to be recessive in the Fi. In the F2, 6 types of plants appeared, one of which was the normal broad-leaf, a type different from either parent.

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