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题名: Systematic implications of seed coat diversity in Gaultherieae (Ericaceae)
作者: Lu, Lu1, 2; Fritsch, Peter W.3; Bush, Catherine M.4; Dong, Li-Na1, 2; null(王红)1; null(李德铢)1
刊名: BOTANICAL JOURNAL OF THE LINNEAN SOCIETY
关键词: Andromedeae ; character evolution ; seed morphology ; synapomorphy ; systematic implication ; taxonomy ; Vaccinioideae
英文摘要: The seed morphology of 90 samples from 83 species of tribe Gaultherieae (Chamaedaphne, Diplycosia, Eubotryoides, Eubotrys, Gaultheria and Leucothoe) and relatives in tribes Andromedeae (Andromeda and Zenobia) and Vaccinieae (Satyria) was investigated with stereoscopic and scanning electron microscopy. Seeds exhibit variation in shape, colour, size, wing, hilum region, primary ornamentation and epidermal cells. Non-metric multidimensional scaling (NMDS) analysis based on selected seed characters supports the affinities of some groups within Gaultherieae at various taxonomic levels. Seed characters corroborate the delimitation of Andromeda, Chamaedaphne, Leucothoe, Satyria and Zenobia and Gaultheria series Trichophyllae, series Hispidulae, section Amblyandra and section Brossaeopsis. Parsimony optimization of seed characters onto a previously published phylogenetic estimate of Gaultherieae reveals that small seeds have evolved from larger seeds and an areolate seed coat has evolved from a reticulate seed coat. Optimization also suggests that several seed character states are synapomorphies or potential synapomorphies for some major clades of Gaultherieae. Seeds of Gaultherieae from East Asia, temperate North America and the Pacific are more diverse than those from tropical America. Samples from the eastern Himalaya possess the highest variation in seed morphology. The wing and bulging edge cells observed in seeds of Leucothoe suggest dispersal by wind. (C) 2010 The Linnean Society of London, Botanical Journal of the Linnean Society, 2010, 162, 477-495.
出版日期: 2010-03-01
卷号: 162, 期号:3, 页码:477-495
语种: 英语
收录类别: SCI
学科分类: Plant Sciences
ISSN号: 0024-4074
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/3138
Appears in Collections:中国科学院东亚植物多样性与生物地理学重点实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Lab Biodivers & Biogeog, Kunming Inst Bot, Kunming 650204, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
3.Calif Acad Sci, Dept Bot, San Francisco, CA 94118 USA
4.Wake Forest Univ, Dept Biol, Winston Salem, NC 27109 USA

Recommended Citation:
Lu, L; Fritsch, PW; Bush, CM; Dong, LN; Wang, H; Li, DZ.Systematic implications of seed coat diversity in Gaultherieae (Ericaceae),BOTANICAL JOURNAL OF THE LINNEAN SOCIETY,2010,162(3):477-495
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