HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Bingham, E. T. Search for Related Content PubMed Articles by Bingham, E. T. Agricola Articles by Bingham, E. T.

Interaction of Two Basic Color Factor Genes in Alfalfa¹

A basic color factor gene C₁ in diploid alfalfa (Medicago saliva L.) (S-2128) was found to be nonallelic with the basic color factor gene C₂ in tetraploid alfalfa. The tetraploid recessive c₂ was transferred down to diploid level by haploidy, and the diploid recessive C₁ was transferred up to the tetraploid via 2n gametes. Both genes produced monohybrid segregation ratios of about 3:1 at the diploid level and tetrasomic ratios of about 35:1 in the tetraploid. The dihybrid F2 segregation of both genes at the diploid level was about 9:7, indicating recessive epistasis. The homozygous recessive condition of either c₁ or c₂ produces a white flowered, white seeded phenotype. Additional research is needed to determine the independence or linkage of the two genes. The genetic stocks were made available for this and other research.

Key Words: Medicago sativa • Genetics • Chromosome • Haploid • Gamete

² Associate Professor of Agronomy.