水稻SSR标记的遗传多样性研究进展

本文从SSR标记优点和适用于研究水稻遗传多样性入手，综述了SSR标记在水稻核心种质构建与评价、遗传结构、稻种起源演化等方面的研究进展。总结了水稻遗传多样性的地带性特征（云南是中国稻种资源的最大遗传多样性中心和优异种质的富集地；西南稻区粳稻品种遗传多样性最丰富；南方稻区粳稻品种的遗传多样性高于北方粳稻遗传多样性）、遗传多样性与生态地理位置密切相关、目前水稻品种遗传基础狭窄、多样性降低等特征，分析了遗传多样性成因及影响因素，特别指出了育种行为对遗传多样性的影响，并针对当前水稻品种遗传多样性较低的问题提出了对策。

Research Progress on Genetic Diversity Development in Rice by SSR

Starting with the superiority and applicability of studying rice genetic diversity by SSR, this paper overviewed the research progress in constructing and evaluation of core collection, genetic structure, origin and evolution of rice. Summarized the zonal character of genetic diversity in rice (Yunnan was the richest center of genetic and gene diversity of rice in China; the west southern had richest japonica rice varieties genetic diversity and the japonica rice varieties genetic diversity of southern rice region rice area was higher than that of northern rice region), the genetic diversity was closely related with ecological and geographical location, present rice varieties genetic base was narrow and rice genetic diversity was decreasing etc. The genetic diversity cause and influence factors were analyed. The breeding behavior influenced rice genetic diversity was being specifically pointed out, which made the rice genetic diversity decrease. And it offered the countermeasures for current narrow genetic diversity of rice.