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Published in Crop Sci 12:250-251 (1972)
© 1972 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Genetic Male Sterility in Barley. IV. Self-Incompatibility Tests1

W. W. Roath and E. A. Hockett2

Nine genetic male-sterile barley (Hordeum vulgate L.) mutants, each having some stainable pollen, were used as pollen parents on the three dlifferent male-sterile females msl, ms2, and ms7. Similar seed set was obtained from crosses with pollen from male-fertile sibs of the nine mutants onto male-sterile plants of msl, ms2, or ms7. The female male-sterile plants of msl had significantly less seed set than those of ms2 or ms7. Self-incompatibility is not responsible for the self-sterility in the nine malesterile mutants, since none were able to effect pollination of the three female lines.

Key Words: Hordeum vulgare L • Pollination • Percent seed set

1 Joint contribution of the Plant Science Research Division, Agricultural Research Service, USDA, and the Montana Agricultnral Experiment Station, published with the approval of the Director of the Montana Agr. Exp. Sta. as paper No. 219, Journal Series. Part of a dissertation submitted by the senior author iu partial fulfillment of the requirements of the Ph.D. degree.

2 Former Graduate Student (now Research Agronomist, De-Kalb AgResearch Inc., Fargo, N.D. 58102) and Research Agronomist, PSRD, ARS, USDA, Montana State University, Bozeman, Mont. 59715.

Received for publication December 8, 1971.




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