[1]郑世英,郑晓彤,耿建芬,等.硅对干旱胁迫下野生大豆幼苗生长和生理特性的影响[J].大豆科学,2018,37(02):263-267.[doi:10.11861/j.issn.1000-9841.2018.02.0263]
　ZHENG Shi-ying,ZHENG Xiao-tong,GENG Jian-fen,et al.Effects of Silicon on Growth and Physiological Characteristics of Wild Soybean Seedlings Under Drought Stress[J].Soybean Science,2018,37(02):263-267.[doi:10.11861/j.issn.1000-9841.2018.02.0263]
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硅对干旱胁迫下野生大豆幼苗生长和生理特性的影响

《大豆科学》[ISSN:1000-9841/CN:23-1227/S] 卷: 第37卷 期数: 2018年02期 页码: 263-267 栏目: 出版日期: 2018-03-20
Title:
Effects of Silicon on Growth and Physiological Characteristics of Wild Soybean Seedlings Under Drought Stress
作者:
郑世英1; 郑晓彤2; 耿建芬1; 郑芳1; 李士平1; 潘恩敬1; 李东臣1
（1.德州学院 生态与园林建筑学院，山东 德州 253023； 2.中国人民大学 统计学院，北京 100872)
Author(s):
ZHENG Shi-ying1;  ZHENG Xiao-tong2;  GENG Jian-fen1;  ZHENG Fang1;  LI Shi-ping1;  PAN En-jing1;  LI Dong-chen1
(1.College of Ecology and Landscape Architecture, Dezhou University, Dezhou 253023, China; 2.School of Statistics, Renmin University of China, Beijing 100872, China)
关键词:
硅; 干旱胁迫; 野生大豆; 生理特性
Keywords:
Silicon;  Drought stress;  Wild soybean;  Physiological property
分类号:
S565.1
DOI:
10.11861/j.issn.1000-9841.2018.02.0263
文献标志码:
A
摘要:
为探讨外源硅对干旱胁迫下野生大豆生长的影响，以野生大豆为试验材料，研究不同浓度外源硅对干旱胁迫下大豆幼苗的生长及生理特性的影响。结果表明：干旱胁迫会使野生大豆鲜重、干重、叶绿素含量、根系活力及SOD、CAT、POD活性降低，细胞膜透性、MDA、游离脯氨酸及可溶性糖含量增加。随着硅处理浓度的不断升高，野生大豆鲜重、干重、叶绿素含量、根系活力逐渐增加；低浓度硅胁迫提高了SOD、CAT、POD活性，降低了细胞膜透性、MDA、游离脯氨酸及可溶性糖含量，随着硅胁迫浓度的不断提高，SOD、CAT、POD活性逐渐下降，细胞膜透性、MDA、游离脯氨酸及可溶性糖含量先下降再升高。说明一定浓度的外源硅能有效促进干旱胁迫下野生大豆幼苗的生长，提高抗氧化酶活性，降低细胞膜透性、MDA、游离脯氨酸及可溶性糖含量，能够缓解干旱胁迫对野生大豆幼苗的危害，提高野生大豆抗旱能力。
Abstract:
In order to explore the effect of exogenous silicon on the growth of wild soybean under drought stress, the effects of different concentrations of exogenous silicon on the growth and physiological characteristics of soybean seedlings under drought stress were studied. The results showed that drought stress could reduce the fresh weight, dry weight, chlorophyll content, root vigor and SOD, CAT, POD activity of wild soybean, and increase cell membrane permeability, MDA content, free proline and soluble sugar content. With the increasing of silicon concentration, fresh weight, dry weight, chlorophyll content and root vigor of wild soybean increased. Low concentration of silicon stress increased the activity of SOD, CAT and POD, reduced cell membrane permeability, MDA content, free proline and soluble sugar content, with the increasing of silicon stress concentration, SOD, CAT, POD activity gradually decreased, cell membrane permeability, MDA content, free proline and soluble sugar content decreased first and then increased. It indicated that exogenous silicon could effectively promote the growth of wild soybean seedlings under drought stress, improve the antioxidant enzyme activity, reduce cell membrane permeability, MDA content, free proline and soluble sugar of content, so exogenous silicon can alleviate the harm of drought stress to wild soybean seedlings and improve the drought resistance of wild soybean.

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备注/Memo

收稿日期：2017-09-01

第一作者简介：郑世英（1962-），女，学士，教授，主要从事野生大豆抗性生理研究。E-mail：zsy0015@163.com。
通讯作者：李东臣（1965-），男，硕士，副教授，主要从事植物抗性生理研究。E-mail：sys8985@163.com。

更新日期/Last Update: 2018-04-02