用微卫星引物PCR分析棉蚜不同蚜型的DNA多态性

用微卫星引物PCR方法, 对棉蚜Aphis gossypii干母、干雌、孤雌蚜(有翅迁飞孤雌蚜和无翅孤雌蚜)、性母、性雌蚜和雄蚜的DNA多态性进行分析。 结果表明：① 棉蚜的有性蚜型和无性蚜型之间在遗传上有较大的差异； ② 性母与性雌蚜和雄蚜的遗传关系都十分接近，说明同一性母既产性雌蚜，也产雄蚜；③ 干母和干雌的遗传关系很近, 但孤雌蚜已与二者有分化。

Microsatellite DNA polymorphism in different forms of the cotton aphid

The PCR technique with microsatellite primers was used to analyze the DNA polymorphism in different forms (mother of mating forms, mating female, male, fundatrix, apterous and alate virginoparae ) of the cotton aphid, Aphis gossypii. The results showed that: 1. There existed a obvious genetic differentiation between sexual forms and parthenogenetic forms of the cotton aphid;2. Mother of mating forms had almost the same genetic relation to the mating female and male, suggesting that the mother of mating female also be the mother of male;3. Compared with virginoparae, the genetic relationship between fundatrix and the first generation of virginoparae (apterous) produced by fundatrix (apterous) was much close.