BREEDING SOUTHERNPEA AND TOMATO FOR RESISTANCE TO INSECT PESTS

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  • 1 U. S. Vegetable Laboratory, ARS, USDA, 2875 Savannah Highway, Charleston, SC 29414

The use of multidisciplinary teams has been the key to making progress in the development of insect resistant southernpea [Vigna unguiculata (L.) Walp.] and tomato (Lycopersicon esculentum Mill.) cultivars; both the plant breeder and the entomologist have primary program responsibilities. The basic approach encompasses three separate but interrelated phases: 1) evaluation of germplasm collections to locate needed sources of resistances, 2) genetic studies to determine the inheritance of resistances, and 3) breeding programs to transfer resistance genes into adapted germplasm. The basic approach must usually be supplemented by concurrent research to, determine the nature and value of resistances and to develop evaluation procedures, selection criteria, and plant breeding methodologies. Selected examples from research projects on southernpea (resistances to cowpea curculio, southern green stinkbug, leaf footed bug, leaf miners, and thrips) and tomato (resistances to tomato fruitworm, tobacco hornworm, and Colorado potato beetle) will be used to illustrate approaches and methodologies.

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