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A collection of 558 barleys (Hordeum vulgare L. emend. Lam) from Ethiopia and five from Sudan were evaluated for BYDV resistance. As found in previous studies, some Ethiopian barleys have high levels of resistance; 72 or 13% of the entries tested were resistant. Two resistant introductions were from Sudan, bin: since the center of concentration for resistance is in Ethiopia, it is likely that these introductions also have Ethiopian ancestry.
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Qualset et al. (1969) studied this question.
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