Studies on the Inheritance of Color in the Japanese and Chinese Radish (II)

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  • ダイコンの色の遺傳研究 (II)

Abstract

With respect to root color, the following genes may be assumed:<br>G: a gene for pale green neck.<br>C: a gene for flavones as chromogenic substance for the production of anthocyanins.<br>R: a gene for the production of red pigment.<br>B: a gene which produces no color alone, but acts in conjunction with R gene to produce purple pigment.<br>Rs: a gene for red striping.<br>Rf: a gene causing a red coloration of the vascular bundle in all parts of the plant. In the root this gene manifests red flesh. Rf gene is mutable, reverting to its recessive white(Rf→r).<br>Red flesh, red striping, red, and white are so related geneticallythat any two of them taken together give results conforming to amonogenic scheme. Consequently it seems probable that the gene forred flesh constitutes a set of multiple allelomorphs with three genesfor red striping, red, and white.<br>The probable genotype of the root color may be represented as follows:<br>ccrrBBgg, CCrrBBgg……white (white neck), <br>CCrrBBGG……white (pale green neck), <br>CCRRbbgg……red (white neck), <br>CCRRbbGG……red (pale green neck), <br>CCRsRsBBGG……reddish purple striping (pale green neck), <br>CCRfRfbbGG……red flesh (green neck).

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