ISHS Acta Horticulturae 431: Tospoviruses and Thrips of Floral and Vegetable Crops
CONVENTIONAL BREEDING: HOST-PLANT RESISTANCE AND THE USE OF MOLECULAR MARKERS TO DEVELOP RESISTANCE TO TOMATO SPOT WILT VIRUS IN VEGETABLES |
| Authors: | J.J. Cho, D.M. Custer, S.H. Brommonschenkel, S.D. Tanksley |
| Abstract:
Development of plants with resistance to tomato spotted wilt virus (TSWV) represents the most effective and environmentally sound method for managing and preventing virus epidemics. Genetic resistance is common among tomato species. However, only Lactuca peruvianum provides resistance that appears to be effective against TSWV isolates from different geographic regions. Resistant lines derived from L. peruvianum have been developed in California, Hawaii, and South Africa. Sources of resistance or partial resistance have also been identified in Capsicum chinense and several Lactuca sp. Resistance in tomato and pepper appears to be controlled by a single dominant gene. We have also developed DNA markers linked to TSWV resistance to facilitate efforts to develop resistant commercial tomatoes by means of marker-assisted selection. A dominant RAPD (random amplified polymorphic DNA) marker has been identified and is being employed. | |
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