%0 Journal Article
%A Haiyan GU
%A Liqin HE
%T Pollen Morphological Characteristics of 13 Wild Orchids in Mount Emei, China
%D 2025
%R 10.7525/j.issn.1673-5102.2025.06.011
%J Bulletin of Botanical Research
%P 939-951
%V 45
%N 6
%X <p>In order to provide experimental basis for palynological and taxonomic studies of Orchidaceae， pollen morphological characteristics of 13 wild orchids from 10 genera in Mount Emei were investigated and compared by light microscopy and scanning electron microscopy. The results indicated the rich diversity of pollen morphology of wild orchids in Mount Emei， and the pollen morphology of species from three genera， <i>Holcoglossum</i>， <i>Odontochilus</i> and <i>Rhomboda</i> were demonstrated for the first time. The properties of pollinium （granular， waxy）， texture （granular pollinium， separable pollinium，hard pollinium）， number （2，4，8）， morphology （e.g.， horseshoe shaped， crescent-shaped， obovoid， spherical， oblanceolate， clavate， etc.）， surface structure （smooth but uneven， granular， rough， stripy， laminated， etc.） of pollinia， as well as the pollen dispersal units （tetrahedral pollen， massulae， pollinium） and their exine ornamentation （foveolate， fine reticulate， pitted， coarse reticulate， fine punctate， smooth， etc.） varied greatly among genera， while the pollen morphological characteristics of different species within the same genus shared certain features， but there were also specificities. There were significant differences in surface structure of pollinia and exine ornamentation of pollen dispersal units among the four species of the genus <i>Calanthe</i>. The results showed that pollen morphological characteristics was an important basis for identifying closely related species within and between genera of Orchidaceae. There was strong differentiation of orchids in Mount Emei， with a high proportion of endangered and endemic species. Therefore， it is necessary to strengthen research on the diversity of pollen characteristics of wild orchids in this area.</p>
%U https://bbr.nefu.edu.cn/EN/10.7525/j.issn.1673-5102.2025.06.011