Biology Characteristics of Botrytis cinerea Pathogens on Amorphophallus Konjac

doi:10.11924/j.issn.1000-6850.2014-1946

Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (31): 316-320.doi: 10.11924/j.issn.1000-6850.2014-1946

Received:2014-07-15 Revised:2014-07-15 Accepted:2014-09-09 Online:2014-11-20 Published:2014-11-20

Abstract

Abstract: In order to clarify the pathogenesis of konjac Botrytis cinerea, the symptom, pathogen and biology characteristics were studied systematically. The results showed that, Botryotinia was pathogen of konjac Botrytis cinerea, and the conidia germination temperature was from 10 to 30℃. The optimum temperature was 20-25℃. pH of conidia germination was from 4 to 9, and the optimum pH was 5. Conidia could germinate in various nutritive liquid. 2% of sucrose solution was the best, followed by 2% of glucose or konjac glucomannan solution. Lethal temperature of conidia was 57℃ for 5 min. Botrytis cinerea could grow in 4 kinds of medium. PDA was the most appropriate medium for mycelia growth, and PDA plus konjac mannan was the best medium for sporulation. Pathogen could grow and sporulate at 5-30℃ and pH from 4 to 9, and the optimum condition was at 20-25℃ and pH 5.

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