Gas exchanges of three co-occurring species of Cypripedium in a scrubland in the Hengduan Mountains
Zhang, SB; Hu, H; Xu, K; Li, ZR
2006
发表期刊PHOTOSYNTHETICA
ISSN0300-3604
卷号44期号:2页码:241-247
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.
关键词Alpine Environment Apparent Quantum Efficiency Carboxylation Efficiency Co2 Concentration Conservation Leaf Nitrogen Content Respiration Rate Stomatal Conductance
收录类别SCI
语种英语
引用统计
文献类型期刊论文
条目标识符http://ir.kib.ac.cn/handle/151853/3184
专题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
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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.
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