新疆农业科学2018，Vol.55Issue(10)：1837-1846,10.DOI:10.6048/j.issn.1001-4330.2018.10.009
棉铃红粉病鉴定及气候条件对病菌生长和孢子萌发的影响
The Identification of Pathogen of Pink Mold Rot on Cotton Boll and the Influence of Climatic Conditions on the Growth and Spore Germination of the Fungus
摘要
Abstract
[Objective] To clear and definite the effects of different temperature, humidity and light on the growth, sporulation and spore germination of cotton boll red powder disease in Xinjiang, and to understand the effects of different temperature, humidity and light conditions on the growth, sporulation and spore germination.[Method]The pathogen was identified by isolation, culture, pathogenicity, morphological observation and rDNA-ITS sequence analysis. The fungus colony growth, sporulation capacity and spore germination were measured by setting different temperature, humidity and light. [Result]The results showed that the pathogen causing pink mold rot on cotton boll was Trichothecium roseum in Xinjiang. The strain could grow at 10-35℃ and the optimum temperature was about 25℃. It was found that it could not grow below 5℃ and above 40℃. Complete darkness and light dark alternation were beneficial to sporulation. The optimum temperature of spore germination was 20-25℃, but it could not germinate at below 5℃ and above 40℃. Spores could germinate under the condition of complete darkness, light and light dark alternation, but the optimum germination condition was complete darkness and the germination rate of spores was the highest in relative humidity above 80％.[Conclusion]The pathogen causing the cotton boll pink mold rot was T. roseum in Xinjiang. Temperature about 25℃, complete darkness and light and dark alternately favor growth and sporulation, and the temperature at 20-25℃, completely dark, and the relative humidity above 80％ were beneficial to spore germination.关键词
棉铃红粉菌/鉴定/菌落生长/产孢量/孢子萌发Key words
pink mold rot on cotton boll/identification/colony growth/sporulation capacity/spore germination引用本文复制引用
焦瑞莲,任毓忠,李志强,董海涛,武刚,张莉,李国英..棉铃红粉病鉴定及气候条件对病菌生长和孢子萌发的影响[J].新疆农业科学,2018,55(10):1837-1846,10.基金项目
科技部中小企业创新项目 （）
国家重点资助研发项目 (2017YFD0201900) （2017YFD0201900）
