温湿度对芒果炭疽病病原菌分生孢子萌发及附着胞形成的影响  

Effects of temperature and humidity on conidium germination and appressorium formation of Colletotrichum gloeosporioides

作　　者：张贺[1] 韦运谢[1] 漆艳香[1] 陆卓婷 刘晓妹[2] 谢艺贤[1] 蒲金基[1,2] 

机构地区：[1]中国热带农业科学院环境与植物保护研究所,海南海口571101 [2]海南大学环境与植物保护学院,海南海口570228

出　　处：《中国植保导刊》2015年第1期10-13,共4页China Plant Protection

基　　金：公益性行业(农业)科研专项(201203092);中国热带农业科学院院本级基本科研业务费专项资金(1630042013020)

摘　　要：测定了温、湿度对芒果叶片上的胶孢炭疽菌分生孢子萌发及附着胞形成的影响。结果表明,胶孢炭疽菌分生孢子在12-37℃范围内均可萌发,且形成附着胞,适宜温度24-28℃。接种6 h后,附着胞开始形成,9-12 h为附着胞形成高峰期;分生孢子在相对湿度90%-100%范围内均可萌发,且形成附着胞。相对湿度越高越有利于分生孢子萌发及附着胞的形成。Effects of temperature and relative humidity on conidium germination and appressorium formation of Colletotrichum gloeosporioides were tested on excised mango leaves. The results showed that conidium germinated and appressorium formed at temperature ranging from 12 ℃ to 37 ℃. Optimum temperature was 24-28 ℃. Appressorium formed after inoculation on mango leaves 6h and most germinated conidia formed appressorium after 9-12 hours. Conidial germination and appressorial formation occurred at relative humidity of 90%-100% and their rates increased with relative humidity increased. Because experimental data was measured on mango leaves which was similar to natural conditions, the results could help for accurate forecast of the disease.

关 键 词：胶孢炭疽菌 温度 相对湿度 分生孢子萌发率 附着胞形成率 

分 类 号：S436.67[农业科学—农业昆虫与害虫防治]