烯效唑对淹水胁迫下大豆农艺性状及生理生化指标的影响  

Effects of uniconazole on alleviation of waterlogging stress in soybean

作　　者：张洪鹏[1] 张盼盼 李冰[1] 李东[1] 刘文彬[1] 冯乃杰[1] 郑殿峰[1,2] 

机构地区：[1]黑龙江八一农垦大学农学院,黑龙江大庆163319 [2]黑龙江八一农垦大学国家杂粮工程技术研究中心,黑龙江大庆163319 [3]榆林学院生命科学学院,陕西榆林719000

出　　处：《中国油料作物学报》2017年第5期655-663,共9页Chinese Journal of Oil Crop Sciences

基　　金：国家科技支撑计划(2014BAD11B01);国家自然科学基金(31271652)

摘　　要：为研究烯效唑对大豆淹水胁迫的缓解作用,以亚有限结荚习性大豆品种垦丰14(耐涝品种)和垦丰16(涝渍敏感品种)为试验材料,在大豆始花期叶面喷施烯效唑,喷药5d后进行淹水胁迫,5d后恢复正常水分管理,调查各处理大豆农艺性状和生理生化指标。结果表明:淹水胁迫抑制大豆生长,降低大豆株高,增加茎基部茎粗,减少植株叶片、叶柄、茎、根等各部位干物质重的积累;涝渍导致大豆体内抗氧化酶活性降低。喷施烯效唑处理能有效缓解淹水胁迫下植物干物质的降低;显著提高大豆体内抗氧化系统酶活性,降低MDA含量,诱导叶片中脯氨酸增加,提高根系中脯氨酸含量,增加根系中可溶性糖与淀粉的积累,为提高大豆耐涝性和恢复正常水分后产量积累提供保障。With sub - indeterminate soybean varieties Kenfeng 14 and Kenfeng 16 as materials, a pot experi-ment was conducted to analyze the effect of uniconazole on agronomic traits and physiological and biochemical char-acteristics of soybean under waterlogging stress. Five days after spraying uniconazole at early flowering period,wa-terlogging stress was performed for five days, and then returned to normal water. The results showed that the growth of soybean was inhibited by flooding stress, the plant height, the accumulation of dry matter in plant leaves, peti-oles, stems and roots and antioxidant enzyme activities were decreased, but the stem diameter was increased. Spra-ying uniconazole could effectively alleviate plant dry matter weight reduced under waterlogging stress, and signifi-cantly improve the activity of soybean antioxidant enzyme system, reduce MDA content, increase proline content in leaf and root, and soluble sugar and starch accumulation in root. All these could improve soybean production by in-crease their waterlogging resistance and returned to normal after moisture accumulation.

关 键 词：大豆 淹水胁迫 烯效唑 生理特性 

分 类 号：S565.1[农业科学—作物学]