湿度调控对番茄灰霉病菌侵染的影响  

Effects of humidity regulation on the infection of Botrytis cinerea to tomato

作　　者：李宝聚[1] 陈立芹[1] 孟伟军[1] 王福建[1] 

机构地区：[1]中国农业科学院蔬菜花卉研究所,北京100081

出　　处：《植物病理学报》2003年第2期167-169,共3页Acta Phytopathologica Sinica

基　　金：北京市自然科学基金重点项目(6001002);国家"九五"攻关项目(96-005-01-12)

摘　　要：番茄灰霉病菌(Botrytes cinerea)的分生孢子萌发需要高湿的环境,一般要求相对湿度在80％以上或水滴中萌发最好。在适温下,随着湿度的增加,病菌致病性增强,孢子在相对湿度85％以上、菌丝在相对湿度80％以上的高湿环境能够发生侵染,并形成危害性的软腐斑。在一天中高湿的时间直接影响番茄灰霉病的发生,高湿(相对湿度超过85％)时间8h以上病菌才能够连续侵染。High humidity was a primary determinant of the spore germination of Botrytis cinerea, the causal agent of tomato gray mould. At least 80% of relative humidity(RH) was needed for the spore germination, and the highest germination ratio could be obtained when the spores were placed in water drops. At optimal temperature, spores and hyphae could infect the tomato plant to develop softening and rot lesion when RH reached over 85% and 80% respectively. In one day, sustaining time of high humidity directly influenced the development of tomato gray mould, the pathogen could infect tomato successful- ly when sustained time of high humidity(RH>85% ) was longer than 8 hrs.

关 键 词：湿度 番茄 灰霉病 病菌侵染 孢子萌发 致病性 软腐斑 

分 类 号：S436.412.1[农业科学—农业昆虫与害虫防治]