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Plant Diversity ›› 2010, Vol. 32 ›› Issue (6): 519-527.DOI: 10.3724/SP.J.1143.2010.10095

• 研究论文 • 上一篇    下一篇


 席雪1、2 , 李树云1, 严宁1, 胡虹1   

  1. 1 中国科学院昆明植物研究所,云南 昆明650204;2 中国科学院研究生院,北京100049
  • 收稿日期:2010-05-05 出版日期:2010-12-25 发布日期:2010-06-28
  • 基金资助:


Photosynthetic Response of Incarvillea zhongdianensis (Bignoniaceae) Subject to Growth Irradiance

 XI  Xue-1、2 , LI  Shu-Yun-1, YAN  Ning-1, HU  Hong-1   

  1. 1 Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650204, China;
    2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2010-05-05 Online:2010-12-25 Published:2010-06-28
  • Supported by:



在原生地和引种地对高山花卉中甸角蒿(1ncarvillea zhongdianensis)光合作用和叶片性状对生长光强的响应进行研究。结果表明:在香格里拉,光合速率 (Pn)、类胡萝卜素(Car)、色素比(Chla/b)均随光强的降低而下降;而比叶面积(SLA)、叶绿素b(Chlb)、叶氮含量(LNCa)随光强的降低而上升。中甸角蒿主要是通过叶片形态、生化效率和叶片氮分配来响应生长光强的变化,对生长光强的适应表现出较大可塑性,使得其相对比较容易引种驯化。中甸角蒿在香格里拉对光照具有较广的适应幅,从香格里拉移栽到昆明后,虽然Pn下降约10%,但RGR增加约30%,表明其可以在昆明较好生长。

关键词: 中甸角蒿, 光强, 光合速率, 叶片性状


Photosynthesis and leaf traits of Incarvillea zhongdianensis grown in different growth irradiances were investigated in ShangriLa and Kunming. The results showed that the photosyhthetic rate(Pn), content of carotenoids(Car), ratio of chlorophyll a to b(Chla/b)in Izhongdianensis decreased with the decreasing irradiance in ShangriLa, while specific leaf area(SLA), chlorophyll b(Chlb), leaf nitrogen content per unit area(LNCa)increased. The photosynthetic acclimation of Izhongdianensis to growth irradiance was mainly dependent on the adjustment of leaf anatomy, biochemical efficiency and leaf nitrogen partitioning into different photosynthetic components. This species showed a large plasticity in photosynthetic response to light intensity, which was contributive to its introduction and domestication. Izhongdianensis had wide adaption for irradiance in ShangriLa, after transplanted to Kunming, Pn decreased about 10%, but relative growth rate (RGR)increased 30%, which indicated that it could grow well under the irradiance condition of Kunming.

Key words: Incarvillea zhongdianensis, Irradiance, Photosynthetic rate, Leaf traits