蚜霉菌(Entomophthora aphidis)是四川成都市郊十字花科蔬菜蚜虫的常见寄生菌,尤其是春秋两季侵染率较高。1991年春调查,留种芜青上的蚜虫20％-30％被寄生。 蚜霉菌侵入蚜虫后首先在其脂肪组织中发育成菌丝,随后菌丝断裂成长短不等的多核菌丝片段,此菌丝段在虫体内以芽殖或分裂的方式增殖,最后,被感染的蚜虫除口器和足外全被菌丝体寄生。感病蚜虫临死时呈淡黄色,死后呈粉红色,扁平,被蚜霉菌的假根固定于叶片背面,不易脱落。将感病蚜虫置 Entomophthora aphidis is a common parasitic bacterium of cruciferous vegetable aphids in the suburbs of Chengdu, Sichuan Province, especially in spring and autumn. In the spring of 1991, 20% -30% of the aphids on the remaining species were parasitized. After the aphid infestation aphid first in its adipose tissue to develop mycelium, followed by hyphae rupture of varying lengths of polychromatic mycelial segments, the mycelium in the body of the budding or split way to proliferate, and finally, be infected Aphids in addition to mouthparts and foot full parasitic mycelium. Aphids were dying when pale yellow, pink after death, flat, was the root of the aphid mold fixed on the back of the leaves, not easy to fall off. Will be sick aphids home