作物杂志,2022, 第1期: 174–178 doi: 10.16035/j.issn.1001-7283.2022.01.026

• 生理生化·植物营养·栽培耕作 • 上一篇    下一篇

褪黑素对干旱胁迫下大豆产量及AsA-GSH循环的影响

杜昕(), 李博, 毛鲁枭, 陈伟, 张玉先, 曹亮   

  1. 黑龙江八一农垦大学农学院,163319,黑龙江大庆
  • 收稿日期:2021-08-15 修回日期:2021-09-22 出版日期:2022-02-15 发布日期:2022-02-16
  • 作者简介:杜昕,研究方向为大豆逆境栽培生理与激素调控,E-mail: 860661665@qq.com
  • 基金资助:
    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)

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

Du Xin(), Li Bo, Mao Luxiao, Chen Wei, Zhang Yuxian, Cao Liang   

  1. College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing 163319, Heilongjiang, China
  • Received:2021-08-15 Revised:2021-09-22 Online:2022-02-15 Published:2022-02-16

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(O2-.)和过氧化氢(H2O2)含量显著提高,D+M处理相比D处理在干旱后15d时,O2-.和H2O2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。

关键词: 大豆, 褪黑素, 产量, AsA-GSH循环, 干旱胁迫

Abstract:

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 O2-. and H2O2 in soybean leaves under D treatment were significantly increased compared with CK treatment, and the contents of O2-. and H2O2 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.

Key words: Soybean, Melatonin, Yield, AsA-GSH cycle, Drought stress

图1

褪黑素对干旱胁迫下大豆ROS副产物的影响 不同小写字母代表差异显著(P < 0.05),下同

图2

褪黑素对干旱胁迫下大豆AsA-GSH循环关键酶活性的影响

图3

褪黑素对干旱胁迫下大豆AsA-GSH循环物质含量的影响

表1

褪黑素对干旱胁迫下大豆形态指标的影响

处理
Treatment
株高
Plant height
(cm)
茎粗
Stem diameter
(mm)
底荚高
Bottom pod
height (cm)
CK 91.45±0.45a 7.20±0.25a 21.50±1.03a
D 87.42±3.12b 6.80±0.21a 19.50±0.70a
D+M 88.99±2.36ab 6.94±0.19a 19.95±1.12a

表2

褪黑素对干旱胁迫下大豆产量构成因素的影响

处理
Treatment
单株荚数
Pod number
per plant
单株粒数
Grain number
per plant
百粒重
100-seed
weight (g)
单株粒重
Grain weight
per plant (g)
CK 17.75±0.14a 38.84±0.25a 19.13±0.71a 9.00±0.40a
D 15.99±0.26c 36.26±0.33c 14.75±0.48c 6.23±0.18c
D+M 16.74±0.14b 37.78±0.19b 16.55±0.49b 6.80±0.52b
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