草业科学2012，Vol.29Issue(5)：687-693,7.
PEG模拟干旱胁迫对玉带草生理特性的影响
Physiological characteristics of Phalaris arundinacea cv. Picta under drought stress simulated by PEG
摘要
Abstract
In order to provide the academic basis of application and popularization, morphological and physiological characteristics of Phalaris arundinacea cv. Picta under drought stress simulated by PEG-6000 with different concentrations and different periods were studied in this experiment. The results showed that the percentage of withered leaves, leaf relative electrolytic leakage, contents of MDA and free proline increased gradually; while content of water soluble protein declined firstly and then increased. SOD and POD activities welevated at begainning then declined. Above 7 parameters showed a significant positive correlation with PEG stress. However, the leaf relative water content decreased continuously and showed an obvious negative correlation with PEG stress. According to the morphological and physiological parame- ters under drought stress, P. arundinacea cv. Picta could be determined as a drought tolerance species and grew normally under moderate drought stress, but it would be damaged under severe drought stress.关键词
观赏草/玉带草/PEG-6000/耐旱性Key words
ornamental grasses/Phalarisarundinacea cv. Picta/PEG/drought tolerance分类
农业科技引用本文复制引用
刘晓东,李洋洋,何淼..PEG模拟干旱胁迫对玉带草生理特性的影响[J].草业科学,2012,29(5):687-693,7.基金项目
贵州省“十一五”重大专项“草坪工厂化生产技术研究与产业化示范推广” （）
四川省科技厅应用基础研究专项基金资助项目 （）
