Karyomorphology of three endemic plants(Brassicaceae:Euclidieae and Arabideae)from the Qinghai-Tibet Plateau and its significance  

作　　者：Wenguang Sun Haixia Wang Rui Wu Hang Sun Zhimin Li 

机构地区：[1]CAS Key Laboratory for Plant Diversity and Biogeography of East Asia,Kunming Institute of Botany,Chinese Academy of Sciences,Kunming 650201,China [2]School of Life Science,Engineering Research Center of Sustainable Development and Utilization of Biomass Energy,Yunnan Normal University,Kunming 650500.China [3]University of the Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Plant Diversity》2020年第3期135-141,共7页植物多样性（英文版）

基　　金：grants from the National Natural Science Foundation of China(grant numbers 31960046 and 31670206 to Z.-M.L.);Strategic Priority Research Program of Chinese Academy of Sciences,China(grant number XDA 20050203 to H.S.);Key Projects of the Joint Fund of the National Natural Science Foundation of China(grant number U1802232 to H.S.)。

摘　　要：In the paper,chromosome number and karyotype of three endemic genera from China are reported for the first time.Our results show that Anzhengxia yechengnica has a karyotype formula2 n=2 x=14=6 m+8 sm and belongs to Stebbins-3 A;Shangrilaia nana karyotype formula is2 n=2 x=14=10 m+4 sm(2 sat) and belongs to Stebbins-1 A;Baimashania pulvinata karyotype formula is 2 n=2 x=16=12 m(2 sat)+4 sm and belongs to Stebbins-1 A.Anzhengxia and Shangrilaia are monospecific genera belonging to tribe Euclidieae and both have a basic chromosome x=7.Baimashania,which belongs to tribe Arabideae,has two species which have a basic chromosome x=8.The implications of these cytological data are compared with morphological support and the implications for each tribe are discussed.We also summarize chromosomal number variation and its systematic implications of two tribes from the Qinghai-Tibet Plateau.

关 键 词：KARYOTYPE Endemic species Anzhengxia Shangrilaia Baimashania Qinghai-Tibet Plateau 

分 类 号：Q943[生物学—植物学]