重寄生放线菌F46和PR对灰葡萄孢的抑制作用  

Inhibiting effect of hyperparasitic actiomy strain F46 and PR on Botrytis cinerea

作　　者：乔宏萍[1] 宗兆锋[1] 

机构地区：[1]西北农林科技大学植保学院植保资源与病虫害治理教育部重点实验室,陕西杨凌712100

出　　处：《西北农林科技大学学报（自然科学版）》2004年第11期23-26,共4页Journal of Northwest A&F University(Natural Science Edition)

基　　金：农业部农业结构调整重大技术研究专项(2002-08-03A);教育部"春晖计划"启动基金(2002-317);西北农林科技大学重点科研项目

摘　　要：　测定了2株重寄生放线菌对灰葡萄孢的作用效果。结果表明,重寄生放线菌F46(Streptomycessp.)和PR(Streptomycessp.)对灰葡萄孢分生孢子萌发和芽管伸长都有一定的抑制作用,镜检可以观察到F46和PR在灰葡萄孢菌丝上产生附着胞、缠绕靶标菌丝,使靶标菌丝畸形等现象;诱发接种后2株重寄生放线菌对苹果、草莓、番茄采后灰霉病均有不同程度的控制作用,在低温下的防效优于高温,提前诱发接种的防效优于同时接种。The hyperparasites strain F46 and PR were evaluated for inhibiting effect on Botrytis cinerea.The conidia germination and growth of germ tube of B.cinerea could be suppressed by the secretion of the hyperparasites.The appressorium and twist hyphae of strain F46 and PR on the mycelium of B.cinerea and deformed mycelium of target pathogen were observed under the microscopy and scanning electronic microscopy.The effective control of the hyperparasitic actinomyces against postharvest gray mold of apple,strawberry and tomato were obtained in the storage condition.Better control effect could be got when the strain F46 or PR was inoculated at 24 h before challenge inoculation and incubation at low temperature.

关 键 词：重寄生放线菌 灰葡萄孢 生物防治 灰霉病 弱寄生植物病原真菌 

分 类 号：S476.19[农业科学—农业昆虫与害虫防治] S432.44[农业科学—植物保护]