Resistance of Peanut Genotypes to Cylindrocladium Crotalariae¹

Peanut (Arachis hypogaea) genotypes representing Virginia, Spanish, and Valencia botanical types were screened for resistance to Cylindrocladium black rot (Cylindrocladium crotalariae) at two North Carolina locations for two seasons. Means for percentages of visibly infected plants and the degree of pod damage were lower for the Spanish types than for either the Valencia or Virginia types. Some genotypes did not perform consistently at the two locations. NC Acc 3033, a small-fruited Virginia type having Spanish 2B in its parentage, was the most resistant line at both locations and offers a source of germplasm usable in developing CBR-resistant varieties.