论文部分内容阅读
基于rep-Pot2-PCR指纹技术,对湖北省稻瘟病重发区病菌群体DNA指纹图谱进行了分析,结果表明,湖北省稻瘟病菌群体具有较丰富的遗传结构,在73%的指纹相似性水平上可将204菌株划分成112个不同的单元型和14个遗传谱系;14个谱系中没有出现绝对的优势谱系;不同年份稻瘟病菌群体遗传结构存在差异,但未发生明显的演化。DNA指纹分析的遗传谱系与生理小种(致病类型)之间呈复杂对应关系。
Based on rep-Pot2-PCR fingerprinting, the DNA fingerprinting of pathogenic bacteria in the rice blast-prone areas in Hubei Province was analyzed. The results showed that the rice blast germplasm in Hubei Province had a rich genetic structure. At the fingerprint similarity level of 73% 204 strains were divided into 112 different haplotypes and 14 genetic lineages; no dominant dominant lineages were found in 14 lines; the genetic structure of M. grisea populations differed in different years but no obvious evolution was observed. DNA fingerprinting genetic lineage and physiological race (pathogenic type) showed a complex correspondence between.