| 生物土壤与生态 |
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| Comprehensive Evaluation of Drought Resistant Ability of 4 Climbing Rose |
| LIAO Wei-biao1,2, XIAO Hong-lang1, ZHANG Mei-ling3, WANG Hai-ming4, YANG Yong-hua5, WU Yong-hua5 |
| 1.Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China; 2.College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China; 3.College of Science, Gansu Agricultural University, Lanzhou 730070, China; 4.School of Mathematics and Statistics, Lanzhou University, Lanzhou 730000, China; 5.Lanzhou Institute of Garden Research, Lanzhou 730070, China |
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Abstract The drought resistance of four climbing rose (Rosa chinensis) cultivars was investigated by pot culture, and the physiological and biochemical indices related to drought resistance were measured under normal and water stress conditions. Taking each drought resistance coefficient as an index to measure single drought-resistance capacity, all drought resistance coefficients were synthesized into several new independent comprehensive indices by using principal component analysis. On the bases of above results, subordinate values of comprehensive indices were worked out through subordinate function, based on which the drought resistance of different climbing rose cultivars could be evaluated. Results indicated that the main drought resistance mechanism of climbing rose was physiological drought resistance. The drought-resistance ability of the four climbing rose cultuvars follows the decreasing order from Jubilation to Summer camp, to Western emperor, and to Mozart. This result can provide basis for selecting climbing rose cultivars in garden greening in the arid regions.
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Received: 25 September 2009
Published: 20 May 2010
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2010, Vol. 30 
