Biological characteristics of 2 species of Colletotrichum causing mango postharvest athracnose.
Hu MeiJiao, Li Min, Yang FengZhen, Zheng FuCong
Author Affiliation: Environment & Plant Protection Research Institute, CATAS, Hainan Danzhou 571737, China.
Southwest China Journal of Agricultural Sciences 18 : 306-310
Abstract : The postharvest anthracnose of mango was caused by Colletotrichum gloeosporioides [Glomerella cingulata] and C. acutatum. 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°C, respectively, and that for C. acutatum was 26, 28 and 24°C. 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 sources, and starch could promote sporulation of C. gloeosporioides. The mycelia of C. acutatum grew well with fructose and sucrose as carbon sources, and the sucrose and maltose could promote sporulation of C. acutatum. C. gloeosporioides was more sensitive to carbendazim and thiabendazole than C. acutatum.