草地学报

›› 2008, Vol. 16 ›› Issue (4): 370-373.DOI: 10.11733/j.issn.1007-0435.2008.04.010

• 研究论文 • 上一篇    下一篇

耐荫地被植物山麦冬光合特性研究

杨学军1, 韩蕾2, 孙振元2, 巨关升2, 毛炳泉3   

  1. 1. 北京草业与环境研究发展中心, 北京, 100097;
    2. 中国林业科学院林业研究所/国家林业局林木培育重点实验室, 北京, 100091;
    3. 江苏常州市武进毛氏丹麦草有限公司, 常州, 213102
  • 收稿日期:2007-10-10 修回日期:2008-01-24 出版日期:2008-08-15 发布日期:2008-08-15
  • 通讯作者: 韩蕾,E-mail:hl04192003@yahoo.com.cn
  • 作者简介:杨学军(1974- ),男,内蒙古赤峰人,助理研究员,博士研究生,从事观赏草资源收集和品种选育研究,E-mail:yxjun2004@yahoo.com.cn
  • 基金资助:
    国家“863”计划项目(2007AA100105);国家自然科学基金项目(30500396)

Study on the Photosynthetic Characteristics of Shade-tolerant Ground Cover Plant Liriope spicata Lour.

YANG Xue-jun1, HAN Lei2, SUN Zhen-yuan2, JU Guang-sheng2, MAO Bing-quan3   

  1. 1. Beijing Research and Development Center for Grass and Environment, Beijing 100097, China;
    2. Research Institute of Forestry, Chinese Academy of Forestry;Key Laboratory of Tree Breeding and Cultivation, State Forestry Administration, Beijing 100091, China;
    3. Wujin Maoshi Danmaicao CO.Ltd., Changzhou, Jiangsu Province 213102, China
  • Received:2007-10-10 Revised:2008-01-24 Online:2008-08-15 Published:2008-08-15

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摘要： 用Li-6400便携式光合分析仪测定了耐荫地被植物山麦冬(Liriope spicata (Thunb.) Lour.)的光合生理特性。结果表明:山麦冬光合日进程有光合午休现象,最大净光合速率为10.2μmolCO2·m-2·s-1,光饱和点为648μmol·m-2·s-1,光补偿点为3.2μmol·m-2·s-1,表观量子效率为0.1389,CO2饱和点为1868μmol·mol-1,补偿点为61μmol·mol-1,最大蒸腾速率为2.2 mmol H2O·m-2·s-1,最大气孔导度为0.100 mmol·m-2·s-1。因此认为山麦冬是具有耐荫和抗旱节水特性的优良地被植物。

关键词: 山麦冬, 光合特性, 耐荫性

Abstract: The photosynthetic characteristics of the Liriope spicata (Thunb.) Lour.were measured using Li-6400 portable photosynthesis system.The results show that midday depression existed for the daily variation of net photosynthetic rate in leaves.The peak value of the net photosynthetic rate was 10.2 μmol CO2·m-2·s-1,the light saturation point 648 μmolm-2·s-1,the light compensation point 3.2 μmol·m-2s-1,while the apparent quantum efficiency 0.1389.The CO2 saturation and compensation point was 1868 μmol·mol-1 and 61 μmol·mol-1,and the peak value of transpiration rate and stomatic conductance was 2.2 mmol H2O·m-2·s-1 and 0.100 mmol·m-2·s-1,respectively.These results indicate that L.spicata is an excellent ground cover plant with characteristics of shade-tolerance and drought-resistant.

Key words: Liriope spicata(Thunb.) Lour., Photosynthetic characteristics, Shade-tolerance

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