褪黑素对干旱胁迫下大豆产量及AsA-GSH循环的影响  

Effects of Melatonin on Yield and AsA-GSH Cycle in Soybean under Drought Stress

作　　者：杜昕 李博 毛鲁枭 陈伟 张玉先[1] 曹亮 Du Xin;Li Bo;Mao Luxiao;Chen Wei;Zhang Yuxian;Cao Liang(College of Agronomy,Heilongjiang Bayi Agricultural University,Daqing 163319,Heilongjiang,China)

机构地区：[1]黑龙江八一农垦大学农学院,黑龙江大庆163319

出　　处：《作物杂志》2022年第1期174-178,共5页Crops

基　　金：黑龙江省大学生创新创业训练计划项目(202110223027);大庆市指导性科技计划项目(zd-2020-44);财政部和农业农村部:国家现代农业产业技术体系(CARS-04-PS16);黑龙江八一农垦大学学成、引进人才科研启动计划(XYB202011)。

摘　　要：为探究褪黑素对干旱胁迫下大豆抗坏血酸-谷胱甘肽(AsA-GSH)循环的影响,以大豆品种绥农26为材料,采用盆栽称重法,设置3个处理,分别为正常供水(CK)、干旱胁迫(D)和干旱胁迫喷施褪黑素(D+M)。结果表明,与CK处理相比,D处理大豆叶片的超氧阴离子O^(-·)_(2)和过氧化氢(H_(2)O_(2))含量显著提高,D+M处理相比D处理在干旱后15d时,O^(-·)_(2)和H_(2)O_(2)含量分别显著下降了18.09%和17.37%。在干旱胁迫后10d时,D+M处理相比D处理AsA和GSH含量分别显著提高了22.39%和15.30%。相比D处理,D+M处理单株粒重显著提高了9.20%。综上所述,外源褪黑素可以提高干旱胁迫下AsA-GSH循环的效率,缓解干旱胁迫对大豆造成的氧化损伤。In order to investigate the effect of melatonin on soybean AsA-GSH cycle under drought stress,the soybean variety Suinong 26 was used as material,and three treatments were set up by pot weighing method:normal water supply(CK),drought stress(D)and drought stress with spraying melatonin(D+M).The results showed that the contents of O^(-·)_(2)and H_(2)O_(2)in soybean leaves under D treatment were significantly increased compared with CK treatment,and the contents of O^(-·)_(2)and H_(2)O_(2)on the 15th day after drought under D+M treatment were significantly decreased by 18.09%and 17.37%,respectively.On the 10th day after drought,the contents of AsA and GSH in D+M treatment were significantly increased by 22.39%and 15.30%compared with D treatment,respectively.The grain weight per plant of D+M treatment was significantly higher than that of D treatment,and 9.20%higher than that of D treatment.In conclusion,exogenous melatonin could improve the efficiency of AsA-GSH cycle under drought stress and alleviate the oxidative damage of soybean under drought stress.

关 键 词：大豆 褪黑素 产量 AsA-GSH循环 干旱胁迫 

分 类 号：S565.1[农业科学—作物学]