Insect and Mite Resistance in Tomato
Host plant resistance has proven to be one of the most effective, economical, and environmentally sound pest control measures known. The term “host plant resistance” was defined by Painter (1951, 1958, 1968) as the relative amount of heritable qualities possessed by a plant which influence the ultimate degree of pest damage. Painter recognized three types of host plant resistance: (1) antibiosis, in which the pest is killed or it is not able to complete its life cycle; (2) non-preference (now called antixenosis; Kogan and Ortman 1978) in which the pest is either repelled or not attracted to, or inhibited from feeding on the plant; and (3) tolerance, in which the plant supports as many pests as other plants, but shows less yield reduction. These categories, however, are not mutually exclusive, and it is not always possible to distinguish one from another in any given case. Over the last several decades, a large volume of literature has been generated on host plant resistance in a variety of crops (reviewed by Panda 1979; Maxwell and Jennings 1980; C.M. Smith 1989).
KeywordsSugar Toxicity Sucrose Polypeptide Trypsin
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