松材线虫入侵种群形成与扩张机制
Invasion of pine wood nematode population formation and expansion mechanism
  • 基本信息
  • 报告类型:  初步报告 编制日期:  2021-02-05 公开范围:  公开 全文页数:  52页
    中文关键词:  松材线虫
    英文关键词:  pine wood nematode
  • 中文摘要

从种群遗传学和生态学两个不同角度分析了松材线虫成功入侵的机制,种群遗传多样性研究表明, 松材线虫入侵过程中,无明显的奠基者效应和由遗传漂变引起的种群遗传瓶颈,由于不同入侵来源的种群多次大量入侵,导致我国入侵种群具有丰富的遗传多样性, 入侵过程中保持有高的种群遗传多样性,是松材线虫成功入侵的遗传学机制之一,种间竞争实验结果表明,松材线虫具有高的繁殖潜能和强的竞争能力,在入侵过程 中能对本地近缘种产生种间竞争和生态替代

  • 英文摘要

Population genetics and ecology from two different angles analyzed the mechanism of nematode invasion success, genetic diversity study showed that pine wood nematode invasion process, no obvious founder effect and genetic drift caused by the genetic bottleneck, because of the different source populations of repeated intrusion intrusion, resulting in China's population has invaded the rich genetic diversity, the invasion process maintains high population genetic diversity, genetic mechanism of pine wood nematode is one of the successful invasion of the competition between the experimental results showed that the pine wood nematode has high reproductive potential and strong competition ability, can produce species interspecific competition and ecological alternative to the local invasion in the process in