Inheritance and expression of purple and yellow storage root color in carrot

Article Abstract:

Single dominant loci, P(sub 1) and Y(sub 2), that have no linkage with each other condition the purple and yellow root colors in carrot. A second locus, P(sub 2), that is connected to P(sub 1) conditions the purple node color. The inheritance of purple leaves, petioles, and bracts is independent of the root color. In a high carotene orange background, the Y(sub 2) locus conditions low carotene content of the xylem, while the orange color spreads to the phloem in a low carotene orange background.

Research, Roots (Botany), Carrots

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Unstable white flower color in groundnut (Arachis hypogaea L.)

Article Abstract:

The groundnut flower's unstable white color is probably due to the presence of an unstable genetic element and alleles producing the white phenotype. Reversal of the white flower color to the normal yellow form, that appears to be due to the removal of the element at the germinal level, is low. Excision of the element at the somatic level produces a fractional reversal of the white color allele, and the formation of yellow, white, or chimeric flowers on the plant.

Flowers, Peanuts

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