江西农业学报2018，Vol.30Issue(4)：1-8,8.DOI:10.19386/j.cnki.jxnyxb.2018.04.01
3株甘薯干腐病菌的生物学特性研究
Study on Biological Characteristics of Three Pathogenic Strains of Dry Rot in Sweet Potato
摘要
Abstract
In order to identify the biological characteristics of three pathogenic strains of dry rot in sweet potato, we carried out single-factor experiments to study the mycelial growth and sporulation quantity of these strains by using cross method and blood cell count. The results showed that the mycelial growth of strains GF1Y and GF2Y was faster under alkaline environment, while strain GF3Y was not so sensitive to pH-value. GF1Y and GF2Y were not sensitive to illumination,while the mycelial growth of GF3Y was the slowest under the condition of 24-h illumination. Under the condition of not adding any carbon source or nitrogen source into culture medium, these 3 strains all could grow rapidly,but their mycelia were relatively thin. The pigment-producing capacity of three strains varied with the changes in pH-value and nitrogen source of culture medium. The hyphal lethal tempera-ture of GF1Y,GF2Y and GF3Y was 58℃,60℃ and 60℃ for 10 min,respectively. The sporular lethal temperature of GF1Y, GF2Y and GF3Y was 48℃,50℃ and 50℃ for 10 min,respectively. Various conditions had little influences on the sporulation quantity of GF1Y and GF3Y due to their very low sporulation quantity. The best conditions for the sporulation of GF2Y were:pH 9,24-h illumination, using glucose as carbon source, and using urea as nitrogen source.关键词
甘薯/干腐病菌/镰刀菌/生物学特性Key words
Sweet potato/Pathogen of dry rot/Fusarium spp/Biological characteristics分类
农业科技引用本文复制引用
杨冬静,谢逸萍,孙厚俊,徐振,张成玲..3株甘薯干腐病菌的生物学特性研究[J].江西农业学报,2018,30(4):1-8,8.基金项目
国家甘薯产业技术体系(CARS-10-B15) （CARS-10-B15）
江苏省政府留学奖学金项目(JS-2014-120). （JS-2014-120）
