高温胁迫下高羊茅草坪草生理特性研究(英文)

被引:8
作者
余高镜
林文雄
机构
[1] 福建农林大学生态研究所
关键词
高羊茅草坪草; 根系活力; 可溶性糖含量; 热胁迫; 保护酶活性; 质膜透性;
D O I
暂无
中图分类号
S688.4 [草坪与地被植物];
学科分类号
090706 ;
摘要
从美国引进的39个高羊茅草坪草种分成了5个生态类型,在1999—2000年从每类中找出一个具有典型性状的草种,测定其周年草坪坪质表现、根系活力、叶片可溶性糖含量变化,同时测定各类草种在高温胁迫下保护酶活性与质膜透性的变化。结果表明,根系活力及可溶性糖含量在一定程度上影响着草坪坪质的周年变化。同时,草坪草叶片MDA含量的增长率和草坪草叶片的质膜透性增长率具有显著的正相关效应。在40℃高温胁迫下,草坪草叶片SOD与POD相对活性和MDA含量的增长率及PMP增长率具有显著的负相关效应,5个草种对高温的抗性能力大小顺序是:Gooden>Regi ment>Tomahawk>SR-8210>Brandy。在此基础上,最后对草坪草抗性的准确快速检测方法进行了讨论。
引用
收藏
页码:75 / 84
页数:10
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