Evaluation on Drought Resistance of Populus tomentosa Clones by Multivariate Statistics
Wang Qing-ning, Tang Jing · Xibei Linxueyuan xuebao · 2005
Using such multivariate statistiscal methods as principal component analysis and canonical correlation analysis,drought resistant order of 30 Chinese white poplar clones was comprehensively presented by analyzing 13 indices of leaf morphology,anatomy and water physiology as well as correlations among them.It was showed that No.25,No.7,No.30,No.98,No.72,No.85 of 30 clones would be with high drought resistance.10 main indices for evaluation were gotten except transpiration efficiency,stomatal density and epidermal thickness.Combining indices for leaf morphology and anatomy with those for water physiology to evaluate drought resistance would be necessary.Accompanied by observation of morphological and anatomical characteristics,determination of physiological functions should be even valuable.Relation between drought resistance of plants and growth was also discussed.