苜蓿蚜敏感品系的纯化

Purification of sensitive species of Aphis medicaginis

农药的生物筛选和毒力测定需要选用对杀虫剂敏感的昆虫虫种,并要求被测试对象对杀虫剂的反应尽量一致(即具有稳定的遗传因子).因此,获取具有稳定遗传因子的敏感品系是农药筛选的第一步,利用苜蓿蚜能孤雌生殖的特性,通过室内多次选育和药剂筛选,培育出相对较纯的、对药剂敏感的苜蓿蚜.

Sensitive insect species to pesticide are selected in pesticide screening and toxicity assay． That is to say, the tested insects have stable genetic factor． So it is first step to have sensitive species of stable genetic factor in pesticide screening． Authors make use of parthenogenesis of aphis to raise sensitive and purer species．