Horizontal Resistance to Insects

Stoner (1992) has reviewed 705 papers on plant host resistance to arthropods in vegetables, and she also quotes reviews of this topic in grain crops, alfalfa, and cotton. She comments that, in most studies, the resistance is a quantitative trait, but she adds that the current situation is little different from that described by Kennedy (1978) who wrote ".. .at present, there are very few commercially available vegetable and fruit cultivars which have been deliberately bred for insect resistance".

A notable exception to this general rule of neglecting the breeding of crops for horizontal resistance to insects is the work of David Fisher (1998) who is investigating the possibility of breeding potatoes for horizontal resistance to Colorado beetle.

Chapter Seven

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