电场处理对毛乌素沙地油蒿抗寒性影响的研究

 不同强度的电场处理沙生植物油蒿（Artemisia ordosica Krash）种子,在毛乌素沙地自然环境下研究电场作用后其根系碳水化合物,叶片水分和渗透调节物随气温下降的变化。结果表明:电场强度为2.0 kV.cm-1、3.5 kV.cm-1和4.5 kV.cm-1时,地温降到零下摄氏度时,其根系碳水化合物和可溶性蛋白质含量增加;气温降到零下10℃左右时,叶片相对含水量、自由水和淀粉含量下降,束缚水、可溶性糖、可溶性蛋白质和脯氨酸含量增加。

Study on Cold Resistance of Artemisia ordosica Krash under Electric Field Treatment in Mu Us Sand Land

The Artemisia ordosica Krash seeds were treaded with different electric intensity. In the natural habitat of Mu Us Sand Land, the root carbohydrate content, the leaf water content and the osmoregulation substances in Artemisia ordosica were tested along with air temperature decreasing. The results showed that, when the soil temperature fell below zero centigrade the carbohydrate content and soluble protein in roots increased after 2.0 kV·cm-1, 3.5 kV·cm-1 and 4.5 kV·cm-1 electric intensity treatments to seeds, respectively; when the soil temperature at about 10 degrees below zero centigrade, the relative water content, the free water content and the starch content of A. ordosica leaves decreased, while the contents of bund water, soluble sugar, soluble protein and proline increased.