Crop Science Journal of Natural Resources and Life Sciences Education
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Published in Crop Sci 6:333-334 (1966)
© 1966 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Coumestrol Differences in Medicago sativa L. Free of Foliar Disease Symptoms1

D. D. Stuthman2, E. M. Bickoff3, R. L. Davis2 and Martin Stob2

The coumestrol content of 4 clones of alfalfa free of foliar pathogens ranged from 6 to 25 ppm. Expressed as percent of control, uterotrophic activity ranged from 105 to 182. These data indicated that differences for coumestrol content and uterotrophic activity could be demonstrated in Medicago sativa clones in the absence of foliar disease symptoms.

1 Joint contribution of the Purdue Agricultural Experiment Station and the Agricultural Research Service, U. S. Department of Agriculture. Published as Journal Paper No. 2713 of the Purdue Agr. Exp. Sta. in cooperation with the Western Regional Research Laboratory, Albany, California. Research supported in part by National Institutes of Health Grant No. EF 00381.

2 Graduate research assistant of Agronomy, Professor of Agronomy, and Professor of Animal Science, respectively, Purdue, University, Lafayette, Ind.

3 Principal Chemist, Feed Investigation Field Crops Laboratory of the Western Regional Research Laboratory, USDA, ARS, Albany, Calif.

Received for publication January 11, 1966.




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