[1]张欣林,等.N-乙酰-L-半胱氨酸缓解盐碱胁迫对大豆幼苗生长抑制[J].大豆科学,2025,(01):96-105.[doi:10.11861/j.issn.1000-9841.2025.01.0096]
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N-乙酰-L-半胱氨酸缓解盐碱胁迫对大豆幼苗生长抑制

《大豆科学》[ISSN:1000-9841/CN:23-1227/S] 卷: 期数: 2025年01期 页码: 96-105 栏目: 出版日期: 2025-01-20
Title:
N-acetyl-L-cysteine Alleviates the Inhibition of Salt Alkali Stress on the Growth of Soybean Seedlings
作者:
张欣林1;  2; 李思琪1; 国爽1; 胡嘉宸1; 赵岩林1; 赵强1;  2; 杜吉到1;  2*
1.黑龙江八一农垦大学 农学院，黑龙江 大庆163319；2.黑龙江省盐碱地改良工程技术研究中心，黑龙江 大庆163319
关键词:
大豆; 盐碱胁迫; NAC; 光合能力; 碳水化合物积累
DOI:
10.11861/j.issn.1000-9841.2025.01.0096
摘要:
为明确N-乙酰-L-半胱氨酸（NAC）对盐碱胁迫下大豆幼苗生长的影响，本研究以大豆品种合丰50为试验材料，采用盆栽法，通过NaCl、Na2SO4、NaHCO3和Na2CO3混合溶液模拟苏打盐碱胁迫，在大豆幼苗的V3期叶面喷施1 mmol·L-1 NAC处理，测定盐碱胁迫下大豆幼苗的生长指标、抗氧化酶活性、活性氧含量、丙二醛含量、叶片光合指标及碳水化合物含量，以分析NAC处理对盐碱胁迫下大豆植株生长的影响。结果表明：与对照组相比，盐碱胁迫显著抑制大豆植株的生长和生物量的积累。与盐碱胁迫相比，NAC处理可显著提高大豆植株的株高、根长、茎粗、根干/鲜重和叶干/鲜重；降低叶片和根系中活性氧含量（O2-和H2O2）及丙二醛（MDA）含量，叶片中MDA含量降幅达58.62%；提高叶片和根系抗氧化酶活性（POD、SOD、CAT和APX），叶片中APX增幅达82.68%；提高叶片的光合作用参数，增加叶片和根系中渗透调节物质和碳水化合物的积累。综上，NAC处理能够通过降低氧化损伤，增强大豆植株的光合能力，促进碳水化合物积累，缓解盐碱胁迫对大豆植株生长的抑制。

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更新日期/Last Update: 1900-01-01