摘要
油杉属是松科中第四纪大冰期后残存的一个原始类群,世界上有11种、2个变种。中国有9种、2个变种,是遗传多样性中心;主要分布于我国秦岭以南地区,南抵海南和台湾地区,个别种分布至越南和老挝。白垩纪至中新世曾广布欧亚大陆和北美洲西部,大冰期以前我国东北地区仍有大量分布。预测未来该属有潜在扩张的趋势。油杉属目前虽然从形态学角度确定了13个类群,但各类群的分类地位还不十分清楚;现阶段已经结合细胞学、同工酶到DNA分子技术手段开展了系统进化学研究,并对油杉的起源和进化已经有了初步的理解和认识。油杉属的地理分布和系统进化学研究为该属的保护利用和遗传改良提供理论依据,今后可构建一个高分辨率的油杉属全分布区的系统发育树,来统一各类群的分类地位与系统演化关系。
Keteleeria Carr.is a primitive group that remains after the Quaternary ice age in the pine family,with 11 species and 2 varieties in the world.China has 9 species and 2 varieties,which is the center of genetic diversity;It is mainly distributed in the south of Qinling Mountains in China,south to Hainan and Taiwan,and some species are distributed to Vietnam and Laos.From the Cretaceous to the Miocene,it was widely spread in Eurasia and western North America,and there was still a large number of distribution in northeast China before the Great Ice Age.Predict potential expansion trends in the genus in the future.Although 13 taxa have been identified from the morphological point of view,the taxonomic status of each group is not very clear.At this stage,systematic evolutionary research has been carried out in combination with cytology,isoenzymes and DNA molecular technology,and the origin and evolution of Cedar have been initially understood and recognized.The geographical distribution and phylogenetic evolution of the genus provide a theoretical basis for the conservation and utilization and genetic improvement of the genus,and a high-resolution phylogenetic tree of the whole distribution area of the genus can be constructed in the future to unify the taxonomic status and phylogenetic relationship of various groups.
作者
袁艳超
肖文发
刘逸夫
王亚
聂稳
谭灿灿
刘建锋
常二梅
贾子瑞
YUAN Yanchao;XIAO Wenfa;LIU Yifu;WANG Ya;NIE Wen;TAN Cancan;LIU Jianfeng;CHANG Ermei;JIA Zirui(Ecology and Nature Conservation Institution,Chinese Academy of Forestry,Beijing 100091,P.R.China;Research Institute of Forestry,Chinese Academy of Forestry,Beijing 100091,P.R.China;State Key Laboratory of Forest Tree Genetics and Breeding,Beijing 100091,P.R.China)
出处
《西部林业科学》
CAS
北大核心
2023年第4期137-143,共7页
Journal of West China Forestry Science
基金
国家自然科学基金面上项目(32271694)。
关键词
油杉属
地理分布
分类学
Keteleeria Carr.
geographical distribution
taxonomy
