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园艺学报 ›› 2004, Vol. 31 ›› Issue (5): 637-640.

• 研究报告 • 上一篇    下一篇

葡萄试管苗不同叶位叶片光合与呼吸的特性

陈佰鸿1,2;李新生2;曹孜义3;赵长增1;黄永红1   

  1. (1 甘肃农业大学园艺系, 兰州730070 ; 2 陕西理工学院陕西省资源生物重点实验室, 汉中723001 ; 3 甘肃农业大学农学院, 兰州730070)
  • 收稿日期:2004-04-18 修回日期:2004-09-21 出版日期:2004-10-25 发布日期:2004-10-25

Studies on Photosythetic and Respiratory Characters of Different Leaf Positions in Grape Plantlet in Vitro

Chen Baihong1; Li Xinsheng2;Cao Ziyi3;Zhao Changzen1;Huang Yonghong1   

  1. (1 Horticultural Department , Gansu Agricultural University , Lanzhou 730070 , China ; 2 Bio-Resources Key Laboratory of Shaanxi Province , Shaanxi College of Science and Engineering , Hanzhong 723001 , China ; 3 College of Agronomy ,Gansu Agricultural University , Lanz hou 730070 , China)
  • Received:2004-04-18 Revised:2004-09-21 Online:2004-10-25 Published:2004-10-25

摘要: 用CIRA - 2 型光合测定仪, 采用密闭系统落差法测定‘红地球’葡萄试管苗不同叶位的净光
合速率(Pn) 和呼吸速率(Rd) 。结果表明, 葡萄试管苗具有一定的光合能力, Pn 值随叶位的升高而降低, Rd 随叶位的升高而升高, CO2浓度的升高具有提高叶片光合速率和抑制呼吸作用的双重作用。随光强度的增大, 叶片的光合能力明显提高; 随温度的升高, 叶片的Rd 均呈上升趋势, 但Pn 呈现出先升后降的趋势。不同叶位的CO2补偿点随温度的升高而提高。

关键词: 葡萄, 试管苗, 叶位, 光合作用, 呼吸

Abstract: By the way of full of the airtight system , the Pn and Rd of different positions of leaves of ‘Red Globe’grape plantlet s were determined by Combined Inf rared Gas Analysis System. The results showed that grape plantlets have a certain ability of photosynthesis. The leaves on the higher position have
the lower value of net photosynthesis rate (Pn) but have the higher respiratory rate (Rd) . The increased concent ration of CO2 can enhance the rate of net photosynthesis , meanwhile , rest rain respiration , and obviously , the Pn was improved due to the increasing of light intensity. With the rise of temperature , all the Rd of leaves tended to increase , but the Pn increased first and then decreased. Compensation point of CO2 of leaves in different leaf positions increased with the temperature increasing.

Key words: Grape, Plantlet, Leaf position, Photosythetic, Respiratory

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