摘要
通过观察、测定6株毒力不同的球孢白僵菌菌株在SDAY培养基平板上的萌发行为及萌发参数发现,白僵菌萌发孢子具有几种萌发形态,单芽管萌发型、双芽管萌发型、三芽管萌发型及拟附着孢型。对马尾松毛虫幼虫毒力的高低,与孢子萌发中时(GT50)相关极显著(r=0.9240),与单、双芽管孢子比例(C1/C2)(r=0.8598)、及双芽管孢子的长芽管与短芽管平均长度的差值(X1-X2)(r=0.8376)均相关显著。菌株毒力与萌芽管平均长度及萌芽管整齐度(CV)相关不显著。
Different germination behaviorsindexes of Beauveria bassiana strains were observed and measured on the plate of SDAY medium.Several germination figures were observed as following,single germ tube type,double germ tube type,triple germ tube type and appresorium like germination type.Strain virulence to the larvae of Dendrolimus Punctatus was relative to these following parameters:half germination time(GT 50 )(r= 0.9240), single to double germ tube type rates(r=0.8598)and the average germ length difference between the longer and the shorter germ tube of the double tube germination type(r=0.8376).The average germ tube length and its variant coefficient had no relationship to virulence.
出处
《森林病虫通讯》
北大核心
1998年第3期12-14,共3页
Forest Pest and Disease
基金
国家"九五"攻关课题
关键词
球孢白僵菌
马尾松毛虫
毒力
萌发行为
Beauveria bassiana,Dendrolimus Punctatus ,virulence,germination behavior