摘要
以干旱敏感型品种黑农65和抗旱品种抗线9号为供试材料,采用沙培方式结合15%PEG-6000模拟干旱胁迫,研究了叶面喷施ABA、SA、JA对干旱及复水下的大豆生长的影响。结果表明:3种外源激素均可以显著降低干旱胁迫及复水下大豆叶片有害物质MDA和过氧化氢含量,同时还能提高干旱胁迫过程中保护性物质可溶性糖和可溶性蛋白含量,大体上表现为ABA的作用效果高于SA和JA,从而降低干旱胁迫对大豆机体的损害程度。3种外源激素均减轻了干旱胁迫对大豆株高、叶、茎、根鲜重和干重的抑制作用,其中JA对干旱敏感型品种黑农65株高、器官鲜、干重的促进效果较好,而SA对抗旱品种抗线9号的促进效果好于ABA和JA。3种外源激素均可降低干旱胁迫导致的大豆落花率,其中SA的作用效果好于ABA和SA。总体来看,外源ABA、SA、JA对干旱胁迫下干旱敏感型品种的促进效果较抗旱品种更明显。
This study was conducted with drought sensitive variety HN65 and drought resistant variety KX9, sand culture and PEG-6000 were used to simulate drought stress to research on the effect of exogenous ABA,JA and SA on soybean growth under drought and re-watering. The result showed that, three exogenous plant hormones all could decrease MDA and hydrogen peroxide content in soybean leaf, which was bad for accumulation of soluble sugar and soluble protein content, protecting soybean from drought and re-water. And ABA showed more significant promotive effect than SA and JA. Three exogenous plant hormones all could alleviate the inhibition of drought on morphological index, JA had more promotive effect than ABA and SA for drought-sensitive soybean variety HN65, and SA had more promotive effect than ABA and JA for drought resistant variety KX9. Three exogenous plant hormones all could decrease drop flower rate of both varieties especially HN65.
作者
金毅
郑浩宇
金喜军
张玉先
任春元
JIN Yi ZHENG Hao-yu JIN Xi-jun ZHANG Yu-xian REN Chun-yuan(College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing 163319, China)
出处
《大豆科学》
CAS
CSCD
北大核心
2016年第6期958-963,共6页
Soybean Science
基金
国家级大学生创新项目(201510223006)
国家自然科学基金(31401332
204134008)
国家"十二五"科技支撑计划(2014BAD11B01-02)
国家现代农业产业技术体系建设专项(CARS-04-PS17)
