Pathogen Isolation and Identification of Three Diseases in Understory Dendrobium devonianum Paxt. in Longling
刊名 Asian Agricultural Research
作者 Chunmei SUN, Huangxin RAN, Qingli HAN
作者单位 Understory Resource Conservation and Utilization Key Laboratory of Yunnan Province, Southwest Forestry University, Kunming 650224, China
DOI 10.19601/j.cnki.issn1943-9903.2026.05.009
年份 2026
刊期 5
页码 42-45
关键词 Dendrobium devonianum Paxt.; Understory cultivation; Black spot; Round spot; Brown spot; Pathogen identification
摘要 To identify the disease types and pathogen composition of understory Dendrobium devonianum Paxt. in Longling County, Yunnan Province, a disease investigation was carried out by the field survey method combined with the quadrat sampling method. Through tissue isolation, pathogenicity testing, and morphological as well as molecular identification, three fungal diseases were identified: black spot, round spot, and brown spot. In specific, black spot had the highest incidence (40.98%), and was caused by Nigrospora chinensis. Round spot was caused by Neopestalotiopsis foedans. Brown spot was caused by Pseudopestalotiopsis camelliae-sinensis.