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The Journal of Heredity 1984:75(6):440-444
© 1984 The American Genetic Association 75:440-444

research-article

Genetics of flower and pod color in Phaseolus vulgaris

Christian A. Okonkwo, and Carl D. Clayberg

Department of Horticulture, Kansas State University Manhattan, KS 66506
Department of Horticulture, Kansas State University Manhattan, KS 66506

Reprint requests should be addressed to Dr. Clayberg

Abstract

A new locus, Prp (purple pod), having five alleles affecting anthocyanin pigmentation of corolla and pod, is described in Phaseolus vulgaris L. The allele Prp produces dark-purple corolla and is fully dominant in this respect over the other four alleles that determine light-purple corolla. In the absence of Ro, Prp is responsible for medium-purple pod when homozygous and light-purple pods in combination with the other alleles. The alleles prpsh2 and prpsh give green pods shaded with purple and are codominant with the prpst allele, which causes green pods to be striped with purple. These four alleles are dominant for pod color over prp, an allele causing green pods when homozygous. The interaction of these alleles with the genes Gri, V, and Ro, which also affect anthocyanin pigmentation of corolla and pod, is described. No linkages among these four loci were observed.


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