摘要
从湖南山区和丘陵区两类稻瘟病生态系中的60个水稻品种上采集稻瘟病标样,经单孢分离获得103个菌株.采用Pot2-PCR指纹分析,结果表明,稻瘟病山区和丘陵区生态系病菌群体都具有明显的遗传多样性,山区病菌群体遗传组成比丘陵区更为复杂,且两类生态系的稻瘟病菌群体内都存在较大的异质性和变异潜能.
A total of 103 monoconidial isolates of Magnaporthe grisea are collected from 60 rice cultivars or lines, from both hilly and mountainous ecosystems in Hunan.DNA fingerprinting analysis by Pot2 RepPCR shows that population structure of blast pathogen in mountainous and hilly ecosystems of rice blast disease is genetically diverged,and the genetic diversity in mountainous ecosystem is more complex than that in hilly ecosystem. Therefore, there is rather heterogeneous and potential variation in the pathogen population of the two ecosystems.
出处
《湖南农业大学学报（自然科学版）》
CAS
CSCD
北大核心
2003年第3期211-215,共5页
Journal of Hunan Agricultural University(Natural Sciences)
基金
国家"863"资助项目(39800102)
关键词
稻瘟病菌
遗传多样性
DNA指纹
rice blast pathogen
genetic diversity
DNA fingerprinting
