多主棒孢霉分生孢子萌发因素的研究

Studies on Factors Affect Germination of Conidium of Corynespora assiicola

对影响多主棒孢霉分生孢子萌发的因素进行研究。结果表明,在30℃水膜存在的条件下,多主棒孢霉分生孢子培养2 h即可萌发,6 h后分生孢子萌发率达到较高水平;分生孢子萌发形式多样,可从一端、两端、一端一侧、两端一侧长出条芽管。不同黄瓜品种叶表露珠及叶片研磨液对分生孢子萌发率、芽管数量、菌丝长短有显著影响。抗病黄瓜品种叶片研磨液对该菌分生孢子萌发起抑制作用。

Factors affect germination of conidium of Corynespora cassiicola were studied in the paper. The results showed that： the conidium was able to germinate after 2 hours culture with water film under the temperature of 30℃, the germination ratio reached higher level after 6 hours culture. The conidium germinated with different patterns, i.e., some germinated from one end, some from both ends, some from one end and one side, and some from both ends and one side. Effect of dews on cucumber leaves and juice of cucumber leaves of different varieties on the ratio of germination, quantity of sprout and length of hypha was different. Juice of leaves of disease resistant cucumber varieties inhabited germination of conidium.