[1]周诗意,刘乃新,陈百翠,等.纳米二氧化钛引发对盐胁迫下水稻种子萌发的影响[J].江苏农业科学,2025,53(11):73-79.
 Zhou Shiyi,et al.Impacts of nanoTiO2 on germination of rice seeds under salt stress[J].Jiangsu Agricultural Sciences,2025,53(11):73-79.
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纳米二氧化钛引发对盐胁迫下水稻种子萌发的影响()

《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第53卷
期数:
2025年第11期
页码:
73-79
栏目:
遗传育种与耕作栽培
出版日期:
2025-06-05

文章信息/Info

Title:
Impacts of nanoTiO2 on germination of rice seeds under salt stress
作者:
周诗意1刘乃新1陈百翠2李承欣2于清涛2宁上轩1卜凡珊2
1.黑龙江大学现代农业与生态环境学院,黑龙江哈尔滨 150080; 2.哈尔滨市农业科学院,黑龙江哈尔滨 150029
Author(s):
Zhou Shiyi et al
关键词:
水稻纳米二氧化钛引发盐胁迫种子萌发
Keywords:
-
分类号:
S511.01
DOI:
-
文献标志码:
A
摘要:
水稻是全球广泛种植的粮食作物,而盐胁迫是影响水稻生长和产量的主要非生物胁迫之一。为探究纳米二氧化钛(TiO2-NPs)对盐胁迫条件下水稻种子萌发及生理特性的影响,以黑稻为试验材料,通过不同浓度TiO2-NPs(0、25、50、100 mg/L)进行种子引发处理,并在 150 mmol/L氯化钠(NaCl)胁迫环境下,观察水稻种子萌发和生理特性的变化规律。结果表明,NaCl刺激的盐胁迫使水稻种子的萌发受到显著影响。与对照组相比,盐胁迫组下黑稻的发芽率、发芽势和发芽指数均显著下降,平均发芽时间显著提高(P<0.05);TiO2-NPs引发能有效缓解盐胁迫,与对照相比,盐胁迫组下50 mg/L TiO2-NPs引发的水稻种子发芽率、发芽势和发芽指数分别提升了25.01%、70.50%、5329%,平均发芽时间较盐胁迫处理缩短了3.87%,提高了可溶性糖、可溶性淀粉含量和抗氧化酶SOD、POD活性以及内源激素IAA含量,降低了MDA含量及CAT活性、可溶性蛋白含量、GA3和ABA含量。表明,TiO2-NPs引发可以有效缓解盐胁迫,促进黑稻萌发,通过增强抗氧化酶活性来抑制脂质过氧化产物的过度积累,提高水稻对NaCl的耐受能力。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2024-05-17
基金项目:黑龙江省博士后科学基金(编号:LBH-Z22245);哈尔滨科技研究(高校合作)项目(编号:GJ2021TZ002007);黑龙江省高校基本科研项目(编号:2020-KYYWF-1028);中央地方科技发展领导项目(编号:ZY2022A-HRB-02)。
作者简介:周诗意(1999—),女,四川广安人,硕士研究生,从事植物营养研究。E-mail:2931963881@qq.com。
通信作者:刘乃新,博士,副研究员,硕士生导师,从事植物营养研究。E-mail:2003107@hju. edu.cn。
更新日期/Last Update: 2025-06-05