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题名: Plasticity in photosynthesis and functional leaf traits of Meconopsis horridula var. racemosa in response to growth irradiance
作者: null(张石宝)1, 2; Yin, Lu-Xi3
刊名: BOTANICAL STUDIES
关键词: Chlorophyll fluorescence ; Growth irradiance ; Leaf mass per unit area ; Leaf nitrogen ; Photosynthesis
英文摘要: Meconopsis horridula var. racemosa, a valuable horticultural and medicinal plant, grows in the high mountains of the Himalayas under a range of light intensities, from bright illumination on the screes to low light in the understory of shrubs. To understand how this species adapts to these various environments, we examined the relative significance of leaf traits and physiology on photosynthetic light acclimation. Compared with plants exposed to low growth irradiance, those under greater irradiance exhibited a higher photosynthetic rate, leaf nitrogen content per unit area (N-a), leaf dry mass per unit area (LMA), chlorophyll a/b ratio and CO2 diffusion conductance. However, photosynthetic nitrogen-use efficiency and leaf N content per unit mass remained relatively constant regardless of light regime. This change in photosynthetic rate under different light conditions was linked to N-a, LMA and CO2 diffusion conductance. Our results show that M. horridula has high photosynthetic plasticity in response to growth irradiance, and that photosynthetic performance is better from plants grown under brighter illumination. Such findings will be beneficial when developing a cultivation strategy in commercial production.
出版日期: 2012-07-01
卷号: 53, 期号:3, 页码:335-343
语种: 英语
收录类别: SCI
ISSN号: 1817-406X
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/15678
Appears in Collections:资源植物与生物技术所级重点实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Econ Plants & Biotechnol, Kunming 650204, Peoples R China
2.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Key Lab Trop Forest Ecol, Kunming 650223, Peoples R China
3.Beijing Forestry Univ, Beijing 100083, Peoples R China

Recommended Citation:
Zhang, Shi-Bao; Yin, Lu-Xi.Plasticity in photosynthesis and functional leaf traits of Meconopsis horridula var. racemosa in response to growth irradiance,BOTANICAL STUDIES,2012,53(3):335-343
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