[J].HEILONGJIANG AGRICULTURAL SCIENCES,2019,(06):132-136.[doi:10.11942/j.issn1002-2767.2019.06.0132]
NaCl胁迫对三种狼尾草生长及生理特性的影响
- 文献标志码:
- A
- 摘要:
- 为掌握3种狼尾草的耐盐性，对它们进行为期30 d的NaCl盐胁迫试验,设置5个土壤含盐量梯度处理，分别为0.25，0.35，0.50，0.60，0.8 g·kg-1，以清水为对照。测定相关形态及生理指标，结合死亡率、枯叶率和茎叶生长量进行分析。结果表明：3种狼尾草耐盐能力由强至弱的次序为长穗狼尾草、矮株狼尾草、东方狼尾草，它们能够忍受的土壤NaCl含量分别为0.60，0.60，0.50 g·kg-1。随着土壤含盐量的增加，3种狼尾草叶片中SOD及CAT的活性均呈现先升高后降低的变化趋势；MDA含量呈先上升后下降，最后又上升的变化趋势，且与SOD和CAT活性的变化有一定的关系。
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备注/Memo
收稿日期：2018-12-18