昆虫的抗药性发展很快,防治农作物的害虫,只靠施用农药,效果就会大减。因此,治虫必须有全面的计划,其中一个重要组成部分是寻找和利用抗虫的抗源。Painter R.H.认为,处于类似田间环境条件之下,比其他植物受损伤较少或受侵扰较轻的植物,在遗传学上被称作是抗虫的(resis-tant)。至于植物为什么抗虫,这涉及三个基本组成部分:不偏爱(nonpreference)——植物主要由于缺少某种物质,害虫不喜爱在其上产卵、隐藏或取食;抗生现象(antibiosis)—— Insect resistance develops rapidly, preventing pests of crops, pesticide alone, the effect will be greatly reduced. Therefore, the worm must have a comprehensive plan, one of the important components is to find and use of insect resistance source. Painter R.H. believes that plants that are under similar field environmental conditions, less damaged or less disturbed than other plants, are genetically referred to as resis- tant. There are three basic components involved in the development of plants: nonpreference - the pest does not like spawning, hiding or feeding on it mainly due to the lack of a substance; antibiosis -