title: [Bletilla striata pseudobulb rot pathogen identification and its biological characteristic].
abstract: OBJECTIVE
  To identify the pathogen of Bletilla striata pseudobulb rot and provide foundation for formulation effective control measures.
  
  
  METHODS
  Surveyed the pathogenesis regularity and disease symptom of Bletilla striata pseudobulb rot,and conducted the pathogen separation, identification,vaccination and research on its biological characteristics.
  
  
  RESULTS
  The conditions for mycelium growth were as follows: the temperature ranged from 5 to 35 degrees C, and the optimum temperature ranged from 25 to 30 degrees C. The pH ranged from 3 to 10,and the optimum pH ranged from 6 to 7. The germination rate of conidia was high when the relative humidity was 100%. The lethal temperature was 55 degrees C for 10 min. Illumination had little influence on the germ growth and development.
  
  
  CONCLUSIONS
  The results showed that the pathogen was Fusarium oxysporum.
authors.affiliation: Department of Plant Protection,Yunnan Agricultural University, Kunming 650201, China. le2972@163.com
authors.forename: Le-Le
authors.initials: LL
authors.lastname: Sun
authors.forename: Yong-Hong
authors.initials: YH
authors.lastname: Yang
authors.forename: Jun-Kai
authors.initials: JK
authors.lastname: Liu
authors.forename: Min
authors.initials: M
authors.lastname: Zhou
mesh_terms: D005670:Fusarium / Q000145:classification / Q000254:growth & development / Q000302:isolation & purification*; D006863:Hydrogen-Ion Concentration; D025282:Mycelium / Q000254:growth & development; D029595:Orchidaceae / Q000382:microbiology*; D010935:Plant Diseases / Q000382:microbiology* / Q000517:prevention & control; D010946:Plants, Medicinal / Q000382:microbiology*; D013172:Spores, Fungal / Q000254:growth & development; D013696:Temperature