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Progeny from crosses between isolates of Pyrenophora teres sensitive and resistant to the sterol demethylation-inhibiting fungicide (DMI) triadimenol revealed that resistance segregates at a single, major genetic locus. Crosses between isolates from different geographic regions (Canada, New Zealand, and the United States) indicated a lack of fertility barriers between isolates from these regions and indicated that resistance to tri- adimenol is conferred by alleles at the same genetic locus (...)
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Tobin L. Peever (1992) studied this question.
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