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 Stucker, R. E. Articles by Pedersen, M. W. Search for Related Content PubMed Articles by Stucker, R. E. Articles by Pedersen, M. W. Agricola Articles by Stucker, R. E. Articles by Pedersen, M. W.

Evidence of Cytoplasmic Male Sterility in Alfalfa¹

A new source of male sterility found in ‘DuPuits’ alfalfa (Medicago sativa L.) was classified as cytoplasmicgenic on the basis of male-sterile F₁'s when the male-sterile plants were crossed with either of two pollen-fertile plants, a positive correlation (P<.O1) between sterility in the F₁ and BC₁ progenies, and a reciprocal difference in a cross where the reciprocal was identified with a recessive marker.

The mechanics of hybrid seed production appear workable, but major developmental problems include identification of lines with superior combining ability and insect and disease resistance; and pollination of the seed Crop.

Key Words: Heterosis • Combining ability • Pollen classification

² Research Agronomist, and Research Geneticist (Now Assistant Professor, University of Minnesota), Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, Logan, Utah 84821, and St. Paul, Minnesota, respectively.

Received for publication May 17, 1969.