Crop Science Journal of Natural Resources and Life Sciences Education
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Published in Crop Sci 11:200-203 (1971)
© 1971 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Genetic Male Sterility in Barley. III. Pollen and Anther Characteristics1

W. W. Roath and E. A. Hockett2

Pollen staining, pollen and anther appearance, and anther size were observed in 18 genetic male sterile mutants in barley, Hordeum vulgare L. The stains used were 2,3,5-triphenyltetrazolium chloride (TTC), acetocarmine, and iodine potassium iodide. Stain uptake with the vital stain TTC was not a good indication of selfing ability, but nonstainability indicated sterility. To facilitate allelism studies four groups of mutants were delimited: A. Selfing ability-ms9; B. Near-normal pollen and anther development but no selfing-ms6, ms8, ms16; C. Extremely abnormal pollen and anther development- ms3, ms7; and D. Variable pollen and anther development-ms1, ms2, ms4, ms5, ms10, ms11, ms11az, ms13, ms14, ms17, ms18, ms19. The two allelic mutants, ms11 and ms11az, behaved differently for pollen stainability and appearance and for anther size.

Key Words: Hordeum vulgare L. • Tetrazalium stain • Acetocarmine • lodine-potassium-iodide

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 as paper No. 164, Journal Series. Part of a dissertation submitted by the senior author in partial fulfillment of the tequirements of the Ph. D. degree.

2 Former Graduate Student (now Research Agronomist, De-Kalb Ag-Research Inc., Fargo, North Dakota 58102) and Research Agronomist, Crops Research Division, Agricultural Research Service, U. S. Department of Agriculture, Montana State University, Bozeman, Montana 59715.

Received for publication June 6, 1970.




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