Data from: A high frequency of allopolyploid speciation in the gymnospermous genus Ephedra and its possible association with some biological and ecological features

Hui Wu, Zhen Ma, Ming-Ming Wang, Ai-Li Qin, Jin-Hua Ran & Xiao-Quan Wang
The origin and evolution of polyploids have been studied extensively in angiosperms and ferns but very rarely in gymnosperms. With the exception of three species of conifers, all natural polyploid species of gymnosperms belong to Ephedra, in which more than half of the species show polyploid cytotypes. Here we investigate the origin and evolution of polyploids of Ephedra distributed in the Qinghai-Tibetan Plateau (QTP) and neighboring areas. Flow cytometry (FCM) was used to measure the...
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