摘要
室内对峙培养和寄生致腐作用测定结果表明 :盾壳霉 (ConiothyriumminitansCampbell)对核盘菌菌丝生长没有明显拮抗作用 ,但对菌核形成有一定抑制作用。被盾壳霉寄生的菌核表面皱缩、软化腐烂 ,后期菌核表面密生大量盾壳霉分生孢子器 ,并从顶端孔口分泌出黑色球状分生孢子黏液。显微镜检盾壳霉寄生的腐烂菌核石蜡切片 ,结果表明 :盾壳霉菌可在菌核的表面和内部疏丝组织寄生 ,并形成分生孢子器。盾壳霉分生孢子器表生、半埋生或埋生于腐烂菌核上。被盾壳霉寄生的菌核 ,后期拟薄壁组织消解断裂成不连续的残片 ,内部疏丝组织消解 ,在发病后期致密的疏丝组织被盾壳霉菌消解成的网状结构所代替。
By confronted culturing the mycoparasite \%Coniothyrinm minitant \%and\%Sclerotinia sclerotium\% and examing the mycopparasitized sclerotia,the antagonistic mechanism was studied.The results inidicated that \%C.minitant\% was not antagonistic to the mycelium growth of\% S.sclerotium \%apparently,but it inhibited the sclerotia formation. The sclerotium infected by \%C.minitant\% shrank and became soft rot .On the infected sclerotium surface ,\%C.minitant\% produced abundant pycnidia which secreted dark bulblike grume of conidia.Bymicroscoping on the wax-scales of decayed sclerotia,it was found with its pycnidia on or within or half-buried in the sclerotia tissue.In the seriously damaged sclerotia,the pseudoparenchyma decayed into minute fragments, and the prosenchyma dissoluted into reticular structure.
出处
《山西农业大学学报（自然科学版）》
CAS
2002年第3期223-226,共4页
Journal of Shanxi Agricultural University(Natural Science Edition)
基金
山西省留学基金资助项目 (990 5 1)
关键词
质壳霉
核盘菌
重寄生机制
向日葵
菌核病
Coniothyrinm minitant
Sclerotinia sclerotiorum
\%Superparatism action
