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  

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

作　　者：李进[1] 张秀伏[1] 

机构地区：[1]中国科学院兰州沙漠研究所

出　　处：《中国沙漠》1996年第4期356-359,共4页Journal of Desert Research

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。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 (pc 6) and the ratio is 0.9204, and the regression equation is Y=1.5696+0.0911X.

关 键 词：梯度分析 锦鸡儿属 植物 抗旱性 定量研究 

分 类 号：Q949.751.9[生物学—植物学]