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

Title:

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

Creator:

Zhang, S. B., Hu, H., Xu, K., and Li, Z. R.

Identifier:

https://cdk.lib.cas.cz/client/handle/uuid:fa7992f7-f32a-4c17-b9e0-9f866b34a77e
uuid:fa7992f7-f32a-4c17-b9e0-9f866b34a77e
issn:0300-3604
doi:10.1007/s11099-006-0014-9

Subject:

alpine environment, apparent quantum efficiency, carboxylation efficiency, CO2 concentration, concentration, conservation, leaf nitrogen content, respiration rate, and stomatal conductance

Type:

model:article and TEXT

Format:

bez média and svazek

Description:

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 m 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 (Pmax), carboxylation efficiency (CE), apparent quantum efficiency (AQE), PPFD-saturated rate of electron transport (Jmax), respiration rate (RD), and leaf nitrogen content per unit area (LNC) of C. guttatum were higher than those of C. yunnanense and C. flavum. The highest Pmax of C. guttatum was related to the highest LNC and the lowest ratio of intercellular CO2 concentration to atmospheric CO2 concentration (Ci/Ca). However, no significant differences in stomatal conductance (gs) and relative stomatal limitations (RSL) were observed among the three species. Hence biochemical limitation had a dominant role in Pmax differences among the considered species. and S. B. Zhang ... [et al.].

Language:

Multiple languages

Rights:

http://creativecommons.org/licenses/by-nc-sa/4.0/
policy:public

Coverage:

241-247

Source:

Photosynthetica | 2006 Volume:44 | Number:2

Harvested from:

CDK

Metadata only:

false