Central South University of Forestry and Technology, The College of Forestry, Changsha, China.
Central South University of Forestry and Technology, The Laboratory of Forestry Genetics, Changsha, China.
PeerJ. 2023 Feb 22;11:e14756. doi: 10.7717/peerj.14756. eCollection 2023.
, which is common in China's Hainan Province, is an important woody olive tree species. Due to many years of geographic isolation, has not received the attention it deserves, which limits the exploitation of germplasm resources. Therefore, it is necessary to study population genetic characteristics for further utilization and conservation of . In this study, 96 individuals in six wild populations were used for ploidy analysis of the chromosome number, and the genetic diversity and population structure were investigated using 12 pairs of SSR primers. The results show complex ploidy differentiation in species. The ploidy of wild includes tetraploid, pentaploid, hexaploid, heptaploid, octoploid and decaploid species. Genetic analysis shows that genetic diversity and genetic differentiation among populations are low. Populations can be divided into two clusters based on their genetic structure, which matches their geographic location. Finally, to further maintain the genetic diversity of , ex-situ cultivation and in-situ management measures should be considered to protect it in the future.
油丹，在中国海南省很常见，是一种重要的木本橄榄树种。由于多年的地理隔离，油丹没有得到应有的重视，限制了其种质资源的开发。因此，有必要研究其种群遗传特征，以进一步利用和保护油丹。在这项研究中，使用了 6 个野生油丹种群的 96 个个体进行染色体数目的倍性分析，并使用 12 对 SSR 引物研究了遗传多样性和种群结构。结果表明，油丹物种存在复杂的倍性分化。野生油丹的倍性包括四倍体、五倍体、六倍体、七倍体、八倍体和十倍体。遗传分析表明，种群间的遗传多样性和遗传分化较低。根据遗传结构，种群可以分为两个聚类，这与它们的地理位置相匹配。最后，为了进一步保持油丹的遗传多样性，应该考虑进行迁地保护和就地保护措施，以保护它。
