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Published in Crop Sci 8:218-220 (1968)
© 1968 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Genetic Male Sterility in Barley. I. Nonallelic Genes1

E. A. Hockett and R. F. Eslick2

Sixteen of the 19 genetic male sterile mutants in barley, Hordeum vulgate L., which have been given permanent numbers are shown to be nonallelic. Three mutants remain to be stndied. All 19 genes behave as single recessives, and except for mslS, ms9, and mslT, show completely sterile heads on all tillers. Msl5 has highly sterile early tillers and semisterile late tillers at Bozeman; ms9 sets 10% selfed seed at Bozeman and 24% at Tucson when male sterile heads are bagged; and msl7 set 1% selfed seed at Bozeman and 3% selfed seed at Tucson. Anther development in the homozygous male steriles ranges from almost normal size in ms6 and msl6 to rudimencary in ms3 and resT. No female sterility has been observed in these male sterile mutants.

Key Words: origin • allelism tests • inheritance • selfing behavior • anther development

1 Joint contribution of the Crops Research Division, Agricultural Research Service, U.S. Department of Agriculture, and the Montana Agricultural Experiment Station, published with the approval of the Director of the Montana Agricultural Experiment Station as paper No. 844, Journal Series.

2 Research Agronomist, Crops Research Division, ARS, USDA, and Professor of Agronomy, Montana State University, Bozeman, Montana 59715.

Received for publication September 5, 1967.




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