XTBG OpenIR  > 濒危植物迁地保护与再引种研究组
Multiple factors contribute to reproductive isolation between two co-existing Habenaria species (Orchidaceae)
Zhang, Wenliu; Gao, Jiangyun
2017
Source PublicationPLOS ONE
Volume12Issue:11Pages:-
AbstractReproductive isolation is a key feature that forms barriers to gene flow between distinct plants. In orchids, prezygotic reproductive isolation has been considered to be strong, because their associations with highly specific pollinators. In this study, the reproductive ecology and reproductive isolation of two sympatric Habenaria species, H. davidii and H. fordii, was investigated by floral phenology and morphology, hand-pollination experiments and visitor observation in southwest China. The two species were dependent on insects for pollination and completely self-compatible. A number of factors have been identified to limit gene flow between the two species and achieved full reproductive isolation. Ecogeographic isolation was a weak barrier. H. fordii and H. davidii had completely overlapped flowering periods, and floral morphology plays an important role in floral isolation. The two species shared the same hawkmoth pollinator, Cechenena lineosa, but the pollinaria of the two orchids were attached on different body parts of pollinators. Prezygotic isolation was not complete, but the interspecific pollination treatments of each species resulted in no seed sets, indicating that unlike many other orchid species, in which the postzygotic reproductive isolation is very weak or complete absence, the post-zygotic isolation strongly acted in the stage of seed production between two species. The results illustrate the reproductive isolation between two species involves multiple plant life-history stages and a variety of reproductive barriers can contribute to overall isolation.
Department其他
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.xtbg.org.cn/handle/353005/10729
Collection濒危植物迁地保护与再引种研究组
Recommended Citation
GB/T 7714
Zhang, Wenliu,Gao, Jiangyun. Multiple factors contribute to reproductive isolation between two co-existing Habenaria species (Orchidaceae)[J]. PLOS ONE,2017,12(11):-.
APA Zhang, Wenliu,&Gao, Jiangyun.(2017).Multiple factors contribute to reproductive isolation between two co-existing Habenaria species (Orchidaceae).PLOS ONE,12(11),-.
MLA Zhang, Wenliu,et al."Multiple factors contribute to reproductive isolation between two co-existing Habenaria species (Orchidaceae)".PLOS ONE 12.11(2017):-.
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