【摘要】 生物防治手段所用生物物种的抗药性遗传改良是害虫综合治理的一个新研究领域。本文以农业害螨的重要捕食性天敌——拟长毛钝绥螨Amblyseius Pseudolongispinosus Xin,Liang et Ke的一个群体为材料,经杀虫剂乐果19次选择后,使抗药性比原来增长10.02倍。拟长毛钝绥螨抗乐果品系是由多基因隐性遗传的。更多还原

【Abstract】 The predatory mite, Amblyseius pseudolongispinosus Xin et al., is a potential biological gent for the integrated control of red spider mites. A strain of the phytoseiid mite collected from 18 locations in China was treated with increasing consistency of dimethoate. After selection for 19 geuerations, the dimethoate resistance of the strain had developed 10.02-fold higher than that of the original. The genetic analysis suggested that the dimethoate resistance was due to a polygenic, recessive basis.更多还原