【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。更多还原

【Abstract】 High humidity was a primary determinant of the spore germination of Botrytis cinerea, the causal agent of tomatogray mould. At least 80% of relative humidity(RH) was needed for the spore germination, and the highest germination ratiocould be obtained when the spores were placed in water drops. At optimal temperature, spores and hyphae could infect thetomato plant to develop softening and rot lesion when RH reached over 85% and 80% respectively. In one day, sustainingtime 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.更多还原