安徽农业科学2011，Vol.39Issue(26)：16009-16012,4.
环境因素对苹果树腐烂病菌分生孢子萌发与存活的影响
Effect of Environmental Factor on the Conidiospore Germination and Survival of Apple Tree Canker Pathogen
摘要
Abstract
[Objective ] The theoretical basis of the prevention of apple rot was provided through the study on the environmental factors affecting the conidiospore germination and survival of apple tree cankerf Valsa ceratosperma( Tode et Fr. ) Marie ] pathogen. [ Method ] The condition of the conidiospore germination and its survival time of apple tree canker pathogen under different circumstances were tested. [ Result ] The conidiospore of apple tree canker pathogen could not germinate in water and its germination rate was over 80% in 3 kinds of media:PDA,ABA or RA for 24 hours' culturing. At 0 -35℃ the conidiospore might germinate,however,its germination time at different temperatures was quite difference and the optimum germination temperature of the conidiospore was under the condition of 25 t for 24 hours' culturing, which germination rate was o ver 90%. Under the condition of 0 ℃ and 18 days' culture, the germination rate of its spore was 64% and at 49 ℃ for 10 minute the conidiocarp would be fatal. The germination rate of the conidiospore was significantly decreased with the increment of UV intensity and the prolonging of its exposure time under UV. The survival time of the conidiospore in the condition of indoor and outdoor was tested respectively. Inside room condi tion, the conidiospore in the apple tree branch could survive for nine weeks and in the apple tree bark would die after 5 weeks. The conidiospore under the condition of natural shade in outdoor could survive for 2 weeks and under sunny place the ability of the conidiospore germination would be lost after 1 week. The survival time of the spore in the sterile water at room temperature was 5 weeks. [ Conclusion ] The spore of the apple rot pathogen had strong adaptability to the environment and its infection could appear in the low temperature of winter.关键词
苹果树腐烂病菌/病害流行/分生孢子萌发/温度/光照Key words
Apple tree canker/ Disease epidemics/ Conidiospore germination/ Temperature/ Light分类
农业科技引用本文复制引用
刘如香,王树桐,司丽丽,陈曲,胡同乐,曹克强..环境因素对苹果树腐烂病菌分生孢子萌发与存活的影响[J].安徽农业科学,2011,39(26):16009-16012,4.基金项目
国家苹果现代产业技术体系项目(nycytx-08-04-01) （nycytx-08-04-01）
公益性行业(农业)科研专项经费项目(200903004-42). （农业）
