A Dominant White Flower Color in Brassica oleracea L

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Abstract
The flowers of the varieties of B. oleracea are usually yellow; a very few are white. A white flowered Jersey kale plant was crossed with a yellow flowered St. Valentine broccoli plant. The progeny of this cross approximated a ratio of 1 white flowered: 1 yellow. The yellow flowered F1 plants produced only yellow flowered progeny. The progeny of some of the white flowered F plants segregated for 3 white flowered plants:lyellow. White flowered F2 plants backcrossed to yellow flowered B. oleracea varieties produced either equal numbers of white and yellow flowered plants or all white flowered. A dominant factor of apparently little commercial importance appearing so seldom in strains bred only for economic characters suggests possible linkage with other characters which are of economic importance.

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