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《Journal of Anhui Agricultural Sciences》 2010-10
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Study on the Pathogeny Identification and Biological Characteristics of Anthracnose in Cassava

CAI Ji-miao et al (Key Laboratory for Baleful Biology Detection and Monitoring of Tropical Agriculture of Hainan Province,Environment and Plant Protection Institute,Chinese Academy of Tropical Agricultural Sciences,Danzhou,Hainan 571737)  
[Objective]The research aimed to isolate and identify the anthracnose pathogen of Cassava and study its biological characteristics.[Method]Two isolates of anthracnose (CCGHN01 and CCGHN03) in Cassava were isolated from the diseased leaves collected from Hainan of China.They were identified through the morphological observation of conidia and ITS sequence analysis.And the morphological characteristics were studied.[Result]The morphological observation of conidia and ITS sequence analysis indicated that the two isolates were Colletotrichum gloeosporioides.The morphological characteristics study results showed that optimum medium for the growth of two strains was PSA,the optimum temperatures were 26 ℃ and 30 ℃ respectively,the optimum pH was 8.0,the optimum light conditions were alternative light and dark and complete darkness respectively.For the conidia germination of two strains,the optimum temperatures were 28 ℃ and 30 ℃ respectively and the lethal temperature was 55 ℃ remaining 10 min.[Conclusion]The research laid the foundation for further control of anthracnose in Cassava.
【Fund】: 国家现代产业体系木薯病虫害普查及其重要外来有害生物预警研究项目(nycytx-17-37);; 农业部公益行业木薯技术体系科学家岗位研究项目(nyhyzx07-13-5)
【CateGory Index】: S435.33
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