摘要
Colletotrichumgloeosporioides(Penz.)Sacc 和ColletotrichumacutatumSimmonds均能引起果采后炭疽病的发生,其中C gloeosporioides为主要病原。分生孢子形态的差异是区分2种果炭疽菌的主要依据。C gloeosporioides菌丝体生长、产孢及孢子萌发的最适温度分别为28、28和32℃,C acutaturm菌丝体生长、产孢及孢子萌发的最适温度分别为26、28和24℃。弱酸、弱碱及中性条件有利于两种炭疽菌的菌丝体生长及孢子萌发,pH3时有利于C acutatum产孢,而C gloeosporioides在pH7时产孢量大。葡萄糖、果糖、蔗糖有利于C gloeosporioides的菌丝体生长,淀粉有利于其产孢;蔗糖、果糖有利于C acutatum菌丝体生长,蔗糖、麦芽糖有利于其产孢。两种炭疽菌对多菌灵、特克多的敏感性存在明显差异,C acutatum对两种药剂的敏感性低于C gloeospozqoides对两种药剂的敏感性。
The postharvest anthracnose of mango was caused by Colletotrichum gloeosporioides (Penz.)Sacc.and Colletotrichum acutatum Simmonds.C.gloeosporioides was considered as the major pathogen.The optimum temperature for mycelium growth,sporulation and spore germination of C.gloeosporioides was 28,28 and 32 ℃,respectively,and that of C.acutatum was 26,28 and 24 ℃.The optimum pH value for mycelium growth of C.gloeosporioides and C.acutatum was 5-8,and that for spore germination of C.gloeosporioides and C.acutatum was 7.The optimum pH value for sporulation of C.gloeosporioides was 8,and that of C.acutatum was 3.The mycelia of C.gloeosporioides grew well on media with glucose,fructose and sucrose as carbon source,and the starch could promote sporulation of C.gloeosporioides.The mycelia of C.acutatum grew well with fructose and sucrose as carbon source,and the sucrose and maltose could promote sporulation of C.acutatum.C.gloeosporioides was more sensitive to carbendazim and thiabendazole than C.acutatum.
出处
《西南农业学报》
CSCD
2005年第3期306-310,共5页
Southwest China Journal of Agricultural Sciences
基金
农业结构调整重大技术研究专项项目(2003-10-02A)
