[1]王志科,刘海卿,杨志浩,等.外源过氧化氢提高玉米种子萌发和幼苗生长对干旱胁迫的耐受性[J].江苏农业学报,2026,42(03):506-512.[doi:doi:10.3969/j.issn.1000-4440.2026.03.008]
　WANG Zhike,LIU Haiqing,YANG Zhihao,et al.Exogenous hydrogen peroxide enhances the tolerance of maize seed germination and seedling growth to drought stress[J].,2026,42(03):506-512.[doi:doi:10.3969/j.issn.1000-4440.2026.03.008]
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外源过氧化氢提高玉米种子萌发和幼苗生长对干旱胁迫的耐受性()

江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
42
期数:
2026年03期
页码:
506-512
栏目:
遗传育种·生理生化
出版日期:
2026-03-31

文章信息/Info

Title:
Exogenous hydrogen peroxide enhances the tolerance of maize seed germination and seedling growth to drought stress
作者:
王志科; 刘海卿; 杨志浩; 白雪儿; 秦丽霞; 石佳禧
(陇东学院农业与生物工程学院/甘肃省陇东生物资源保护利用与生态修复重点实验室,甘肃庆阳745000)
Author(s):
WANG Zhike; LIU Haiqing; YANG Zhihao; BAI Xue’er; QIN Lixia; SHI Jiaxi
(School of Agriculture and Bioengineering, Longdong University/Gansu Key Laboratory of Conservation and Utilization of Biological Resources and Ecological Restoration in Longdong, Qingyang 745000, China)
关键词:
过氧化氢; 玉米; 种子萌发; 干旱胁迫; 耐受性
Keywords:
hydrogen peroxide; maize; seed germination; drought stress; tolerance
分类号:
S513
DOI:
doi:10.3969/j.issn.1000-4440.2026.03.008
文献标志码:
A
摘要:
为了探明外源过氧化氢(H2O2) 缓解干旱胁迫对玉米种子萌发和幼苗生长的作用机制,本研究利用聚乙二醇(PEG)模拟干旱,在10% PEG 处理下,用外源过氧化氢对玉米种子进行浸种处理,观察种子萌发状况,测量幼苗生长指标和生理指标。结果显示,10% PEG处理明显降低了玉米种子的萌发和幼苗生长；用0.02% H2O2浸种处理,能显著提高PEG处理下玉米种子的发芽率和发芽指数,增强了抗氧化酶活性,降低了丙二醛（MDA）含量,促进了脯氨酸和可溶性糖含量的增加。上述结果表明,外源0.02% H2O2处理能激活抗氧化酶活性,降低干旱胁迫下的氧化损伤,从而提高玉米幼苗阶段的耐旱性。
Abstract:
To investigate the mechanism by which exogenous hydrogen peroxide (H2O2) alleviates the inhibitory effects of drought stress on maize seed germination and seedling growth, polyethylene glycol (PEG) was used to simulate drought conditions in this study. Under 10% PEG treatment, maize seeds were soaked with exogenous hydrogen peroxide. Seed germination performance was then observed, and seedling growth parameters and physiological indicators were measured. The results showed that 10% PEG treatment significantly inhibited seed germination and seedling growth in maize. Soaking seeds with 0.02% H2O2 significantly increased the germination rate and germination index of maize seeds under PEG treatment, enhanced antioxidant enzyme activities, reduced malondialdehyde (MDA) content, and promoted the accumulation of proline and soluble sugars. These results indicate that treatment with exogenous 0.02% H2O2 can activate antioxidant enzyme activities and alleviate oxidative damage under drought stress, thereby enhancing drought tolerance in maize at the seedling stage.

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备注/Memo

备注/Memo:
收稿日期：2025-04-22基金项目：甘肃省自然科学基金项目(21JR11RM042)；甘肃省高等学校创新基金项目(2021B-273)；陇东学院博士基金计划项目(XYBY202007、XYBYZK2209)作者简介：王志科(1988-),男,宁夏吴忠人,博士,副教授,主要从事植物逆境抗性研究。(E-mail)378487542@qq.com
更新日期/Last Update: 2026-04-17