水分胁迫对10种墨西哥柏生长及生理生化指标的影响

以10种不同种源的墨西哥柏为材料,采用室内试验与野外观测相结合的方法,研究了10种墨西哥柏在不同水分胁迫条件下生长指标和生理生化指标的变化。结果表明,水分胁迫减缓了墨西哥柏苗高和地径的长势;随胁迫强度的增大,各种源相对含水量明显下降;相对电导率和叶绿素总含量呈先下降而后上升的趋势;脯氨酸和可溶性蛋白质含量明显上升。根据隶属函数法综合评价各种源抗旱能力由强至弱依次为D6、D2、D8、D10、D3、D1、D5、D9、D4、D7。

Effect of Water Stress on Physiological and Biochemical Indexes of 10 Varieties of Cupressus lusitanica

Based on C.lusitanica of different provenances as materials,using the combination method of laboratory experiment and field observation,this article studied the changes of growth index and physiological and biochemical indexes of 10 varieties of C.lusitanica at seedling stage in the condition of different water stress,the results show that water stress slow down the growth vigor of seedling height and root-stem;with the increasing of stress intensity,the relative water content of every variety drops obviously,relative electric conductivity and chlorophyll content appear drop to rise,but the content of proline and soluble protein rise obviously.Based on subordination function method,the drought-resistant abilities of 10 varieties from the high to low are D6,D2,D8,D10,D3,D1,D5,D9,D4,D7.