PEG胁迫对杂交大豆开花期生理特性的影响  

Effects of PEG Stress on Physiological Characteristics of Hybrid Soybean at Flowering Stage

作　　者：包乌日娜 张冬梅[1] 周波[2] 李志刚[1] 向殿军 张卫国[1] 刘鹏[1] BAO Wurina;ZHANG Dong-mei;ZHOU Bo;LI Zhi-gang;XIANG Dian-jun;ZHANG Wei-guo;LIU Peng(College of Agriculture,Inner Mongolia University for Nationalities,Tongliao 028043,China;Tongliao City Soil Fertilizer Workstation,Tongliao 028000,China)

机构地区：[1]内蒙古民族大学农学院,内蒙古通辽028043 [2]内蒙古通辽市土壤肥料工作站,内蒙古通辽028000

出　　处：《内蒙古民族大学学报（自然科学版）》2018年第1期62-67,共6页Journal of Inner Mongolia Minzu University：Natural Sciences

基　　金：内蒙古自治区饲用作物工程技术研究中心开放课题(MDK2017004)

摘　　要：分别采用不同浓度的PEG(0%,5%,10%和15%)模拟干旱胁迫,对30 d苗龄的盆栽大豆幼苗进行干旱胁迫处理,分析2个杂交大豆品种开花期对干旱胁迫的生理响应.结果表明,干旱胁迫导致2个杂交大豆叶片的SPAD值、丙二醛含量升高,脯氨酸含量降低;杂交豆5号的可溶性糖含量和谷胱甘肽还原酶活性升高,而杂交豆2号表现出相反趋势.根据干旱胁迫后2个品种大豆的表型特征和对上述5种生理指标的综合反应,杂交豆5号比杂交豆2号表现出更强的耐干旱胁迫能力,可作为耐旱品种加以推广.To determinethe responses of two hybrid soybean varieties to drought stress at the flowering stage,thirty-day potted hybrid soybean seedlings were treated with 0,5,10,and 15%PEG.Drought stress increased SPAD value and MDA content in leaves of both hybrids.The soluble sugar content and glutathione reductase activity of hybrid soybean 5 were increased under PEG stress in contrast to hybrid soybean 2.Hybrid soybean 5 showed stronger resistance to drought stress compared to hybrid soybean 2,and could be considered as a drought-tolerant variety.

关 键 词：杂交大豆 PEG 生理特性 

分 类 号：Q945.78[生物学—植物学]