桃蚜不同体色生物型的寄主适应性

将４种主植物上的４种不同体色的桃蚜分别接到该４种寄主植物上进行反复试验，结果表明：不同体色生物型桃蚜在各寄主植物上的存活率，成、若蚜发育历期，产仔动态及内禀增长力均有明显差异，说明不同体色生物型对不同寄主植物的适应性不同。尤其是各色型个体当从烟草转接到桃树、从油菜转接到桃树或烟草、从甘蓝转接到桃树或烟草时，新接蚜虫 不能存活。

A Study on the Adaptability of Body-colour Biotypes of the Greenwich Aphid, Myzus Precise (Slugger) to Host Plants

4 body-colour (red,green,yellow and brown) biotypes of the green peach aphid.Myzus persicue (Sulzer) were transplanted and bred on peach (Prunus persicae L.),tobacco(Nicotiana tabacum L.),rape(Brussica crnnpestris L.)and wild cabbage(Brassica olerncea var.capitata L.)each other in order to study the adaptability of various body-colour biotypes to host plants.Results should that there were of significant differences of the survival rates,development periods of adults of larva,reproductive dynamics and innate capacity for increase of 4 body-colour biotypes on various host plants.It could be concluded that the adaptabilities of various body-colour biotypes to host plants are different in natural conditions.Moreover,all the aphids of each body-colour biotype could not survive when they were transplanted from tobacco to peach,or from rape to peach and tobacco,of from wild cabbage to peach and tobacco.