A COLLECTION OF CULTIVARS OF OATS IMMUNE OR HIGHLY RESISTANT TO SMUT

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Abstract
A partial-vacuum method was developed for inoculating large numbers of oat cultivars with smut. It was used over a period of 5 yr to test 5,485 entries, of diverse origin in the U.S. Department of Agriculture World Oat Collection for their reaction to races of loose smut that, in combination, carried all known genes for virulence. There were 305 immune, and 142 highly resistant entries, some of which may contain genes for resistance that can be employed once the presently used genes are no longer effective.

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