RESISTANCE IN SWEET POTATOES TO THE SWEETPOTATO WEEVIL, CYLAS FORMICARIUS ELEGANTULUS (SUMMERS)1
Fourteen sweet potato [Ipomoea batatas (L.) Lam] cultivars and varieties were examined for resistance to the sweetpotato weevil [Cylas formicarius elegantulus (Summers)] in artificially infested fields in Yoakum, TX. One cultivar W-226, appeared to have a greater level of resistance than the other cultivars examined. The data are compared to earlier resistance trials to show that the germplasm presently available has greater levels of resistance than that in previous years. The resistance levels of “Resisto” and “Regal” for the past 4 years are discussed.
Contributor Notes
1 COLEOPTERA: Curculionidae
2 Research Entomologist, U. S. Department of Agriculture, Agricultural Research Service, Stored Product Insects Research and Development Laboratory, P. O. Box 22909, Savannah, GA 31403.
3 Research Geneticist, U. S. Department of Agriculture, Agricultural Research Service, U. S. Vegetable Laboratory, Charleston, SC 29407.
4 Professor, Texas A&M University System, Agricultural Research Center, Overton, TX 75684.
5 Professor in Charge (Retired), Texas A&M University System, Plant Disease Research Station, Yoakum, TX 77995.