Variations in seed micromorphology of Paphiopedilum and Cypripedium (Cypripedioideae, Orchidaceae)

CORC > 昆明植物研究所 > 中国科学院昆明植物研究所 > 资源植物与生物技术所级重点实验室

	Variations in seed micromorphology of Paphiopedilum and Cypripedium (Cypripedioideae, Orchidaceae)
	Zhang, Feng-Ping; Zhang, Juan-Juan; Yan, Ning; Hu, Hong; Zhang, Shi-Bao
刊名	SEED SCIENCE RESEARCH
	2015-12-01
卷号	25 期号:4 页码:395-401
关键词	seed air spaces seed dispersal terrestrial versus epiphytic habits
英文摘要	The micromorphology of a seed is linked to its dispersal and germination, but evolutionary and ecological aspects in Orchidaceae remain unclear. We investigated the seed characters of Paphiopedilum and Cypripedium that might be associated with life form and involved in possible ecological adaptations. A phylogenetic comparative analysis of nine seed micromorphological characters was performed in 24 species from two genera with close phylogenetic relationships but significant differences in their ecological characteristics. Species within Paphiopedilum had larger embryos and a smaller percentage of air space (AS) than those of Cypripedium species. Compared with 16 terrestrial species, two epiphytic Paphiopedilum species had larger embryos and smaller AS. Those larger embryos might ensure more successful seedling establishment while the higher amount of air space in both terrestrial Paphiopedilum and Cypripedium may increase seed buoyancy and enable them to disperse over longer distances. Whereas AS and seed length (SL) are phylogenetically conservative, most other characters examined here had weak signals, indicating clear convergent evolution. Across species, SL was positively correlated with AS, indicating a high degree of seed size-dispersal coordination. These findings may imply a trade-off of seed characters in relation to the possible ecological adaptations required for seedling establishment versus dispersal.
类目[WOS]	Plant Sciences
研究领域[WOS]	Plant Sciences
关键词[WOS]	NATIVE CALIFORNIA ; MORPHOLOGY ; MORPHOMETRY ; PHYLOGENY ; NUCLEAR
收录类别	SCI
语种	英语
WOS记录号	WOS:000366544900003
内容类型	期刊论文
源URL	[http://ir.kib.ac.cn/handle/151853/25326]
专题	昆明植物研究所_资源植物与生物技术所级重点实验室
推荐引用方式 GB/T 7714	Zhang, Feng-Ping,Zhang, Juan-Juan,Yan, Ning,et al. Variations in seed micromorphology of Paphiopedilum and Cypripedium (Cypripedioideae, Orchidaceae)[J]. SEED SCIENCE RESEARCH,2015,25(4):395-401.
APA	Zhang, Feng-Ping,Zhang, Juan-Juan,Yan, Ning,Hu, Hong,&Zhang, Shi-Bao.(2015).Variations in seed micromorphology of Paphiopedilum and Cypripedium (Cypripedioideae, Orchidaceae).SEED SCIENCE RESEARCH,25(4),395-401.
MLA	Zhang, Feng-Ping,et al."Variations in seed micromorphology of Paphiopedilum and Cypripedium (Cypripedioideae, Orchidaceae)".SEED SCIENCE RESEARCH 25.4(2015):395-401.