Gas exchanges of three co-occurring species of Cypripedium in a scrubland in the Hengduan Mountains

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	Gas exchanges of three co-occurring species of Cypripedium in a scrubland in the Hengduan Mountains
	Zhang, SB; Hu, H; Xu, K; Li, ZR
刊名	PHOTOSYNTHETICA
	2006
卷号	44 期号:2 页码:241-247
关键词	Alpine Environment Apparent Quantum Efficiency Carboxylation Efficiency Co2 Concentration Conservation Leaf Nitrogen Content Respiration Rate Stomatal Conductance
ISSN号	0300-3604
通讯作者	huhong@mail.kib.ac.cn
文献子类	Article
英文摘要	Gas exchanges and related leaf traits of three co-occurring species of genus Cypripedium (C. yunnanense Franch., C. guttatum SW., and C. flavum P.F. Hunt et Summerch.) were investigated in a scrubland at 3 460 in a.s.l. in the Hengduan Mountains. The considered species had similar photosynthetic responses to photosynthetic photon flux density (PPFD) and air temperature. The photosynthetic capacity (P-max), carboxylation efficiency (CE), apparent quantum efficiency (AQE), PPFD-saturated rate of electron transport (J(max)), respiration rate (R-D), and leaf nitrogen content per unit area (LNC) of C. guttatum were higher than those of C. yunnanense and C. flavum. The highest P-max of C. guttatum was related to the highest LNC and the lowest ratio of intercellular CO2 concentration to atmospheric CO2 concentration (C-i/C-a). However, no significant differences in stomatal conductance (g(s)) and relative stomatal limitations (RSL) were observed among the three species. Hence biochemical limitation had a dominant role in P-max differences among the considered species.
学科主题	Plant Sciences
WOS关键词	MACRANTHOS VAR. REBUNENSE ; PHOTOSYNTHETIC RESPONSES ; C-3 PLANTS ; FRUIT-SET ; NITROGEN ; LEAVES ; CO2 ; CARBON ; CONDUCTANCE ; LIMITATIONS
WOS研究方向	Plant Sciences
语种	英语
WOS记录号	WOS:000237692200013
公开日期	2011-12-26
内容类型	期刊论文
源URL	[http://ir.kib.ac.cn:8080/handle/151853/3184]
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
作者单位	Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Peoples R China
推荐引用方式 GB/T 7714	Zhang, SB,Hu, H,Xu, K,et al. Gas exchanges of three co-occurring species of Cypripedium in a scrubland in the Hengduan Mountains[J]. PHOTOSYNTHETICA,2006,44(2):241-247.
APA	Zhang, SB,Hu, H,Xu, K,&Li, ZR.(2006).Gas exchanges of three co-occurring species of Cypripedium in a scrubland in the Hengduan Mountains.PHOTOSYNTHETICA,44(2),241-247.
MLA	Zhang, SB,et al."Gas exchanges of three co-occurring species of Cypripedium in a scrubland in the Hengduan Mountains".PHOTOSYNTHETICA 44.2(2006):241-247.