草业学报2017，Vol.26Issue(6)：139-144,6.DOI:10.11686/cyxb2016295
当归炭疽病菌的生物学特性研究
Biological characteristics of the Angelica sinensis anthracnose causal agent, Colletotrichum dematium
摘要
Abstract
The biological characteristics and substrate requirements of Colletotrichum dematium were studied using traditional culture techniques to provide a basis for understanding the occurrence of outbreaks of Angelica sinensis anthracnose.It was found that the temperature range over which mycelium growth and conidial germination of C.dematium occurred was from 10 ℃ to 35 ℃,with an optimum temperature of 25 ℃.Mycelium growth occurred from pH 5 to pH 12,and the optimum pH value was 11.Conidia were produced from pH 8 to pH 11,and the optimum pH value for conidia production was 10,while the optimum for conidial germination was pH 7.The mycelium of C.dematium grew best on media with more abundant carbon and nitrogen supply,but were inhibited by mannitol,D-galactose and chloralose.Mycelium growth and conidial germination were not sensitive to light.Conidia required a relative humidity of 95％ or more for germination,and liquid water was the most suitable medium for conidial germination (P＜0.05).Sucrose solution promoted conidial germination,but potato solution inhibited germination.关键词
当归炭疽病菌/生物学特性/碳源/氮源Key words
Colletotrichum dematium/biological characteristics/carbon source/nitrogen source引用本文复制引用
杨成德,卞静,陈泰祥,陈秀蓉,王涵琦,杨小利,王艳..当归炭疽病菌的生物学特性研究[J].草业学报,2017,26(6):139-144,6.基金项目
甘肃农业大学自列项目(GSAU-ZL-2015-014)资助. （GSAU-ZL-2015-014）
