Field Evaluation of Breeding Lines and Cultivars of Sweet Potato for Resistance to the Sweet Potato Weevil1

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Abstract
Breeding lines and cultivars of sweet potato, Ipomoea batatas (L.) Lam were evaluated in the field during a 4 year period for resistance to the sweet potato weevil, Cylas formicarius elegantulus (Summers). Appreciable resistance occurred in lines from Louisiana, Nigeria, Asia, and the U.S. Vegetable Laboratory. Lines performed similarly with respect to resistance when evaluated in 2 or more years.

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