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题名: Variation of photosynthetic capacity with leaf age in an alpine orchid, Cypripedium flavum
作者: Zhang, S. B.1; Hu, H.1; Li, Z. R.1
刊名: ACTA PHYSIOLOGIAE PLANTARUM
关键词: Cypripedium flavum ; leaf age ; leaf nitrogen ; photosynthesis ; CO2 diffusion limitation
英文摘要: Photosynthetic rate, chlorophyll fluorescence, leaf nitrogen and chlorophyll content of Cypripedium flavum were studied at different leaf ages. The photosynthetic capacity changed significantly with leaf age. Net photosynthesis and chlorophyll content peaked when leaf age was 60 days, decreasing at 30, 90 and 120 days. Stomatal conductance showed the highest value at 60 days, while mesophyll conductance decreased with increasing leaf age. Both leaf nitrogen content per unit area and leaf nitrogen content per unit mass decreased with increasing leaf age. The age-dependent variation in photosynthetic capacity could be linked to the changes in biochemical efficiency, leaf nitrogen content and CO2 diffusion limitation.
出版日期: 2008-05-01
卷号: 30, 期号:3, 页码:381-388
语种: 英语
收录类别: SCI
学科分类: Plant Sciences
ISSN号: 0137-5881
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.kib.ac.cn/handle/151853/2513
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, Kunming 650204, Peoples R China

Recommended Citation:
Zhang, SB; Hu, H; Li, ZR.Variation of photosynthetic capacity with leaf age in an alpine orchid, Cypripedium flavum,ACTA PHYSIOLOGIAE PLANTARUM,2008,30(3):381-388
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