| 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(Streptomyces sp.)和PR(Streptomyces sp.)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。 |
| 关键词: 重寄生放线菌 生物防治 灰葡萄孢 |
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| 基金项目: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 |
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| Inhibiting effect of hyperparasitic actiomy strain F46 and PR on Botrytis cinerea |
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| Abstract: |
| 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. |
| Key words: hyperparasitic actinomyces biological control Botrytis cinerea |
