img

官方微信

高级检索

中国沙漠 ›› 1996, Vol. 16 ›› Issue (4): 356-359.

• 研究论文 • 上一篇    下一篇

利用梯度分析技术对12种锦鸡儿属植物抗旱性的定量研究

李进, 张秀伏   

  1. 中国科学院兰州沙漠研究所, 兰州 730000
  • 收稿日期:1995-07-06 修回日期:1995-11-13 出版日期:1996-12-20 发布日期:1996-12-20

A QUANTITATIVE STUDY ON ABILITIES OF 12 PLANT SPECIES DROUGHT RESISTENCE OF CARAGANA FABR. BY GRADIENT ANALYSIS TECHNIQUE

Li Jin, Zhang Xiufu   

  1. Institute of Desert Research, Academia Sinica, Lanzhou 730000
  • Received:1995-07-06 Revised:1995-11-13 Online:1996-12-20 Published:1996-12-20

摘要: 利用梯度分析技术对锦鸡儿属12种植物8个生理指标进行分析, 计算出了植物的抗旱梯度值; 建立了抗旱梯度轴; 排出了植物的抗旱性顺序; 并指出了影响植物抗旱能力的主导因子。植物的抗旱梯度值与束/自比之间呈线性相关, 相关系数为0.9204, 相关方程为y=1.5696+0.0911x

关键词: 梯度分析, 锦鸡儿属, 植物抗旱性

Abstract: The abilities of 12 plant species' drought resistence of Caragana were evaluated by analysing 8 physiological characteristic indexes using gradient analysis technique. Based on the result of PCA, the drought resistence gradient values of the plants were calculated, the drought resistence gradient axes established, and the dominant factor affecting the abilities of plant drought resistence analysed. The dominant factor is the ratio of bound water content(%) to free water content(%). The correlation coefficient between GV(pc6) and the ratio is 0.9204, and the regression equation is Y=1.5696+0.0911X.

Key words: Gradient analysis technique, Caragana, Drought resistence ablility