Photosynthetic performances of transplanted Cypripedium flavum plants

	Photosynthetic performances of transplanted Cypripedium flavum plants
	Zhang, SB; Hu, H; Zhou, ZK; Xu, K ; Yan, N ; Li, SY
通讯作者	huhong@mail.kib.ac.cn
	2005-10-01
发表期刊	BOTANICAL BULLETIN OF ACADEMIA SINICA
ISSN	0006-8063
卷号	46 期号:4 页码:307-313
摘要	To explore the conservation and cultivation of Cypripedium flavum at comparatively lower altitudes, a study on variations in photosynthetic characteristics was conducted on C flavum plants from the high mountains of the eastern Himalayas. Plants of same size (6 leaves, 35-40 cm height) were selected from Tianshengqiao (alt. 3,450 m) and planted at the gardens at Zhongdian (alt. 3,200 m) and Kunming (alt. 1,900 m). The leaves of C flavum at Tianshengqiao and Zhongdian exhibited higher photosynthetic rate, stomatal conductance, transpiration rate, apparent quantum yield, and carboxylation efficiency than their counterparts at Kunming. The optimal temperatures for photosynthesis of C. flavum plants growing at Tianshengqiao, Zhongdian, and Kunming were 18, 19 and 2 degrees C, respectively. The optimal temperature also increased with increasing photosynthetically active radiation (PAR). However, the photosynthetic responses of C. flavum to PAR were similar at the three sites. The photosynthesis reached light saturation at the PAR of 746-832 mu mol m(-2)s(-1). The inability of C. flavum to acclimate to higher temperature resulted in the depression of photosynthetic rate at the lower altitude (Kunming). The results suggest that C. flavum adapts poorly to the warmer temperatures at low altitudes. It can be cultivated at a lower attitude, but proper agronomical methodology will need to be developed for better growth.
关键词	Cultivation Cypripedium Flavum Gas Exchange Optimal Photosynthetic Temperature Photosynthetic Capacity
学科领域	Plant Sciences
收录类别	SCI
语种	英语
WOS记录号	WOS:000233316400004
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/2425
专题	资源植物与生物技术所级重点实验室
作者单位	1.Chinese Acad Sci, Kunming Inst Bot, Kunming 650204, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Zhang, SB,Hu, H,Zhou, ZK,et al. Photosynthetic performances of transplanted Cypripedium flavum plants[J]. BOTANICAL BULLETIN OF ACADEMIA SINICA,2005,46(4):307-313.
APA	Zhang, SB,Hu, H,Zhou, ZK,Xu, K,Yan, N,&Li, SY.(2005).Photosynthetic performances of transplanted Cypripedium flavum plants.BOTANICAL BULLETIN OF ACADEMIA SINICA,46(4),307-313.
MLA	Zhang, SB,et al."Photosynthetic performances of transplanted Cypripedium flavum plants".BOTANICAL BULLETIN OF ACADEMIA SINICA 46.4(2005):307-313.

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