广东海洋大学学报2017，Vol.37Issue(4)：98-105,8.DOI:10.3969/j.issn.1673-9159.2017.04.015
裂叶喜林芋叶斑病菌的鉴定与生物学特性
Identification and Biological Characteristics of Neofusicoccum mangiferae Causing Leaf Spot on Cut-leaf Philodendron (Philodendron bipinnatifidum)
摘要
Abstract
To confirm the pathogen causing leaf spot on cut-leaf philodendron(Philodendron bipinnatifidum)observed in Zhanjiang,Guangdong province,pathogenicity of isolates from the symptomatic leaf was tested,and identification of pathogen was conducted according to the morphological characteristics and ITS sequence. The results showed the pathogen was Neofusicoccum mangiferae(Syd. & P. Syd.)Crous,Slippers & A.J.L. Phillips. The results of biological characteristics showed that the PDA and CDM medium were most conducive to mycelia growth, the colony diameters were up to 87.0 mm after incubation at 25℃ in dark for five days. The best carbon and nitrogen source of mycelia growth was dextrose and L-alanine respectively. The optimum temperature of mycelia growth ranged from 20℃to 30℃and the optimum pH value was 8. The effects of light treatments on mycelia growth was significantly different.Mycelia growth was advantageous in dark however, light illumination stimulated pathogen sporulation.关键词
裂叶喜林芋/叶斑病/芒果新壳梭孢菌/生物学特性Key words
Philodendron bipinnatifidum/Leaf spot/Neofusicoccum mangiferae/Biological characteristics分类
农业科技引用本文复制引用
易润华,何敏枝,陈群一,何梓彬,江晓宏..裂叶喜林芋叶斑病菌的鉴定与生物学特性[J].广东海洋大学学报,2017,37(4):98-105,8.基金项目
广东省科技厅农业科技攻关项目(2008B020500007) （2008B020500007）
国家级和广东海洋大学学生创新创业训练计划项目[校教务〔2014〕50号CXXL2014050] （）
