野生玫瑰是列入我国物种红色名录的珍稀濒危植物，是食用和观赏玫瑰育种的重要种质资源，对于维持滨海地区生态具有重要意义。申请者的前期研究已经全面掌握了野生玫瑰自然种群分布特点，对不同种群的表型变异和遗传多样性进行研究，并收集了180份野生种质。本课题拟采用叶绿体DNA非编码区序列，结合低拷贝核基因和ITS序列分析对野生玫瑰自然种群进行谱系地理研究，从新角度阐明其谱系地理结构、遗传变异水平和遗传分化特点，探索其起源和演化、迁移路线、分布格局成因；基于分子谱系和地理分布数据与气候数据，利用Biomod2物种分布模型重建不同时期的分布地理格局，预测潜在适宜分布区。本课题可为该珍稀濒危物种的保护利用及种群恢复提供理论依据，为栽培玫瑰的杂交育种提供理论基础。

As a famous rare and endangered plant listed in red book，rugose rose (Rosa rugosa) is not only important germplasm resources for edible and ornamental cultivar breeding but also significant for maintaining ecological environment of coastal region. This study focuses on population genetic differentiation and molecular phylogeographic relationships of rugose rose based on our previous achievements of phenotypic variations and genetic diversity in natural populations. Chloroplast DNA non-coding region fragments，and ITS and low copy nuclear gene sequencing were employed to systematically assess the whole natural populations of rugose rose. It would clarify the phylogeographic structure, genetic variation level, and genetic differentiation characteristic, illuminate origin and evolution pattern, migratory route, and historical causes for the formation of current distribution pattern. Based on molecular phylogeographic, geographical distribution and climate data, Biomod 2 species distribution models were used to reconstruct geographic distribution patterns of in different historical periods, and to predict the potential distribution. Results from these studies would be helpful not only to protect and to develop this rare and endangered plant but also to attain effective management of the genetic resources and population restoration. Also, they would provide a theoretical basis for their crossbreeding.