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 Taylor, N. I. Articles by Anderson, M. K. Search for Related Content PubMed Articles by Taylor, N. I. Articles by Anderson, M. K. Agricola Articles by Taylor, N. I. Articles by Anderson, M. K.

Genetic Male-Sterility in Red Clover¹

The inheritance of a male-sterile condition in red clover (Trifolium pratense L.) was determined. Appropriate crosses were made onto a male-sterile clone, 740, and onto clone 66 which possessed a previously identified malesterile gene (ms₁). Segregations for male-fertility and male-sterility were observed in the following generations: F₁, generation, F₁ and F₂ testcrossed to respective parent clones and F₁'s, F₂ generation from sib-mated F₁'s and sib-mated F₂'s. All ratios observed indicated a second single recessive gene was responsible for male-sterility in clone 740. This locus was apparently independent from ins, of clone 66 and also from the incompatibility factors (S-alleles). Accordingly, this locus was designated ms₂ to distinguish it from ms₁. The two loci (ms₁ and ms₂) interacted in the sib-mated F₂ generation to give a duplicate recessive epistatic type of gene action as indicated by a 9:7 ratio.

Key Words: Duplicate recessive epistasis • Double-cross hybrids • Trifolium pratense L.

² Professor of agronomy, graduate assistant, and associate professor of agronomy (now senior barley breeder, North American Plant Breeders, Berthoud, CO 80513), Univ. of Kentucky, Lexington, KY 40506, respectively.

Received for publication May 9, 1978.