Pleiotropic Effects of gri on Seed Coat and Flower Color in Common Bean

in HortScience
Mark J. BassettVegetable Crops Department, Institute of Food and Agricultural Sciences, University of Florida, Gainesville, FL 32611

Search for other papers by Mark J. Bassett in
Google Scholar

The effects of gri on seed coat and flower color were investigated in a study using Lamprecht line V0400 (PI 527735) as the known source of gri. Seed and flower color data were taken on observations of F2, BC1-F2, and BC2,-F2 populations from crosses of V0400 with the recurrent parent S-593. Segregation was observed for a unique flower color pattern: wing petals have a very pale tinge of blue (laelia), and the banner petal has two violet dots (≈3- to 4-mm diameter) on a nearly white background. This very pale laelia flower color cosegregates with gray-white seed coats produced by gri. Furthermore, the very pale laelia color depends on the action of V for expression and is extinguished by v, which produces pure white flowers. Thus, it was demonstrated that the very pale laelia flower color, for which Lamprecht tentatively proposed the gene symbol vpal, is not controlled by an allele at V but is a pleiotropic effect of gri. It was also demonstrated that Lamprecht line V0060 (PI 527717) carries vlae, not v, as indicated by the genotypic notes accompanying the Lamprecht seed collection.

  • Collapse
  • Expand


All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 10 10 2
PDF Downloads 40 40 4