多效唑对盐胁迫下高羊茅耐盐性的作用  

Effect of paclobutrazal on the salt tolerance of Festuca arundinacea

作　　者：陈兰[1] 黄广远[1] 

机构地区：[1]长江大学园艺园林学院,湖北荆州434025

出　　处：《草业科学》2009年第8期177-180,共4页Pratacultural Science

摘　　要：应用盆栽控盐方法,研究施用不同质量浓度的多效唑(200、400和600 mg/L)对盐处理(0.8%NaCl)高羊茅Festuca arundinacea草坪草耐盐性的影响。结果表明,高羊茅在盐胁迫下表现出根长缩短、生物量减少、相对含水量减少、丙二醛含量增加等一系列变化。施用不同质量浓度多效唑后,能不同程度地增加高羊茅生物量,延长根长,促进叶片可溶性糖的积累,保持更高的叶片相对含水量,减少丙二醛的生成,从而在一定程度上缓解了高羊茅的盐害。在所有的处理中,质量浓度为400 mg/L的多效唑对提高高羊茅耐盐性的效果最佳。The pot experiment was conducted to study the effect of paclobutrazal with different concentrations （200,400 和 600 mg/L） on the salt tolerance of Festuca arundinacea treated with 0.8° of NaCl. The results showed that the salt stress reduced the root length, dry matter biomass and relative water content in leaf, and increased the MDA content. However, the application of paclobutrazal after salt treatment could increase the dry matter biomass, root length and soluble sugar content. In addition, the paclobutrazal treatment decreased MDA accumulation in leaf. All the benefit from paclobutrazal application could be explained as the release of the salt stress in some extent. The concentration of 400 mg/L of paclobutrazal was the best.

关 键 词：高羊茅 盐胁迫 多效唑 

分 类 号：S688.4[农业科学—观赏园艺]