EFFECTS OF VESICULAR-ARBUSCULAR MYCORRHIZAL FUNGI ON THE DEVELOPMENT OF VERTICILLIUM AND FUSARIUM WILTS OF ALFALFA

被引：38

作者：

HWANG, SF ^{[1
]}

CHANG, KF ^{[1
]}

CHAKRAVARTY, P ^{[1
]}

机构：

[1] ALBERTA TREE NURSEY & HORT CTR, EDMONTON T5B 4K3, ALBERTA, CANADA

来源：

PLANT DISEASE | 1992年 / 76卷 / 03期

关键词：

D O I：

10.1094/PD-76-0239

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Interactions of vesicular-arbuscular (VA) mycorrhizal fungi and two wilt pathogens of alfalfa (Medicago sativa), Verticillium albo-atrum and Fusarium oxysporum f. sp. medicaginis, were investigated under controlled conditions over a 6-mo period. The four x two factorial design used included four treatments of mycorrhizal fungi (Glomus spp., G. fasciculatus, G. mosseae, and nonmycorrhizal control) and two levels of pathogen inoculum (with and without) of either V. albo-atrum or F. o. medicaginis. Shoot dry weights of alfalfa plants inoculated with VA mycorrhizal fungi significantly exceeded those of nonmycorrhizal plants. Inoculation with V. albo-atrum or F. o. medicanginis significantly reduced the shoot dry weights of alfalfa. Seedlings inoculated with VA mycorrhizal fungi had a lower incidence of wilt than nonmycorrhizal ones. Propagule numbers of both pathogens were lower in the soil inoculated with VA mycorrhizal fungi than in the nonmycorrhizal soil.

引用

页码：239 / 243

页数：5

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