INHERITANCE OF FLOWER COLORS AND RELATED CHYMOCHROMIC PIGMENTS IN F1 HYBRIDS OF COMMON PORTULACA, PORTULACA GRANDIFLORA

OOTANI SHUNJI, HAGIWARA TOSHIHIKO

doi:10.1266/jjg.44.65

Chymochromic pigments in twenty-five color forms of common portulaca dividing into eleven color groups and their F₁ hybrids were studied by paper-chromatographic and spectrophotometric experiments. Ten pigments of betacyanins (Bc₁ to Bc₅) and betaxanthins (Bx₁ to Bx₅) were chromatographically separated in various color forms of garden portulaca. Most of the flower colors were estimated by qualitative and quantitative differences of chymochromic pigments. In general, the purple components, Bc₃ and Bc₄, predominantly appeared in most of F₁ hybrids, while the yellow components, Bx₁ and Bx₂, did not appear in F₁ hybrids. Therefore, betacyanin were, in general, dominant over betaxanthin. On the other hand, the higher content of betacyanin in purple color form is dominant to the lower content of betacyanin in pink form, and the higher content of betaxanthin in yellow orange form is recessive to the lower content of betaxanthin in pink form in F₁ hybrids. In some F₁ hybrids, however, the pigment content is nearly intermediate between the contents of both parents. White color form containing neither betacyanin nor betaxanthin is recessive to all the colored forms examined.

INHERITANCE OF FLOWER COLORS AND RELATED CHYMOCHROMIC PIGMENTS IN F<sub>1</sub> HYBRIDS OF COMMON PORTULACA, <i>PORTULACA GRANDIFLORA</i>

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