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题名: Seed morphological diversity of Pedicularis (Orobanchaceae) and its taxonomic significance
作者: Liu, Min-Lu1, 2, 3; Yu, Wen-Bin1, 2; null(李德铢)1, 2; Mill, Robert R.4; null(王红)1, 2
刊名: PLANT SYSTEMATICS AND EVOLUTION
关键词: Pedicularis ; Orobanchaceae ; Seed characters ; NMDS ; Taxonomic significance
英文摘要: Mature seeds of 109 species of Pedicularis representing 13 groups according to Tsoong's infra-generic classification were investigated using light microscopy (LM) and scanning electron microscopy (SEM). The largest seeds occurred in P. superba (4.82 +/- A 0.32 mm x 2.18 +/- A 0.18 mm) and the smallest in P. crenata (0.95 +/- A 0.16 mm x 0.72 +/- A 0.08 mm). The individual seed weight ranged from 0.20 to 9.52 mg. There were two types of primary ornamentation, i.e. reticulate and undulate. Reticulate seeds were found in all examined species except for P. pantlingii and P. confluens. The reticulate seeds were divided into three subtypes, i.e. cristate-reticulate, regular-reticulate and membranous-reticulate. Among them, the cristate-reticulate and the undulate primary ornamentation are firstly reported. The inner tangential wall ornamentation was categorized into granulate, ruminate or striate. Seed characters seem to support the transfer of Pedicularis to Orobanchaceae from traditional Scrophulariaceae. Seed length, individual seed weight, primary ornamentation and inner tangential wall ornamentation were considered as potentially useful characters for infra-generic classification. Non-metric multidimensional scaling (NMDS) analyses indicated a clustering of some species in group 1 (Sceptrum) and all species in group 6 (Cyathophora), respectively. However, seed data were not highly congruent with Tsoong's classification for delimitation of existing groups. Some characters, such as seed shape, primary ornamentation, inner tangential wall ornamentation and epidermal cell shape could be applied to identification of some species in this genus.
出版日期: 2013-11-01
卷号: 299, 期号:9, 页码:1645-1657
语种: 英语
收录类别: SCI
学科分类: Plant Sciences ; Evolutionary Biology
ISSN号: 0378-2697
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/17427
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, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming 650201, Peoples R China
2.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Plant Germplasm & Genom Ctr, Kunming 650201, Peoples R China
3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
4.Royal Bot Garden Edinburgh, Edinburgh EH3 5LR, Midlothian, Scotland

Recommended Citation:
Liu,Min-Lu;Yu,Wen-Bin;Li,De-Zhu;Mill,Robert R.;Wang,Hong.Seed morphological diversity of Pedicularis (Orobanchaceae) and its taxonomic significance,PLANT SYSTEMATICS AND EVOLUTION,2013,299(9):1645-1657
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