| 生物土壤与生态 |
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| Physiological and Biochemical Response of Six Cultivars of Hippophae rhamnoides to Drought Stress |
| TIAN Wei-long1, JIANG Zhi-rong1,2 |
| 1.Forestry College of Gansu Agricultural University, Lanzhou 730070, China; 2.Gansu Rural Development Research Institute, Lanzhou 730070, China |
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Abstract Photosynthetic rate, leaf water content, critical water saturation deficiecncy, chlorophyll content, malondialdehyde(MDA) content, free proline content, SOD activity, POD activity, and cell membrane permeability of six cultivars of Hippophae rhamnoides, namely LIAOFU 2, LIAOFU 1, Hippophae sinensis, CHENGSE, HUNJIN, QIJI, under drought stress were determined, and drought resistant abilities of the six cultivars of Hippophae rhamnoides were evaluated by making use of membership function. Results show that values of physiological and biochemical indices of the six cultivars are close to each other in the early drought stage, and their change trends are similar with the increase of the stress strength, but there are significant differences among the six cultivars in the severe stress stage. The drought resistance of the six cultivars follows an order: LIAOFU 2>LIAOFU 1>Hippophae sinensis>CHENGSE>HUNJIN>QIJI.
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Received: 23 December 2010
Published: 20 September 2011
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2011, Vol. 31 
