[1]张缘杨,邹平,马斯琦,等.褐藻寡糖、壳寡糖对大豆植株盐胁迫的缓解效应研究[J].大豆科学,2026,(04):119-128.[doi:10.11861/j.issn.1000-9841.2026.04.0119]

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褐藻寡糖、壳寡糖对大豆植株盐胁迫的缓解效应研究

《大豆科学》[ISSN:1000-9841/CN:23-1227/S] 卷: 期数: 2026年04期页码: 119-128 栏目: 出版日期: 2026-07-20

Title:: Study on the Alleviating Effects of Alginate Oligosaccharide and Chitosan Oligosaccharides on Soybean Plants under Salt Stress

作者:: 张缘杨; 邹平; 马斯琦; 杨柯昕; 荆常亮*; 李义强*; 中国农业科学院烟草研究所，山东青岛 266101

关键词:: 大豆; 盐胁迫; 褐藻寡糖; 壳寡糖; 农艺性状; 生理指标

DOI:: 10.11861/j.issn.1000-9841.2026.04.0119

摘要:: 为研究不同寡糖对盐胁迫下大豆植株生长的影响，以中盐1号为供试材料，在大豆长出第一对三出复叶时，分别浇灌25 mg·L^-1褐藻寡糖和壳寡糖溶液，比较分析不同寡糖对低盐（0.3%）和中盐（0.5%）胁迫下大豆农艺性状及生理指标的影响。结果显示：在低盐和中盐胁迫下，大豆种子发芽率降低，大豆幼苗光合效率降低，植株遭受渗透胁迫和氧化胁迫，生长均受到明显抑制。相较于盐胁迫处理，施加褐藻寡糖和壳寡糖均能提高大豆种子发芽率，显著促进根系生长。在中盐胁迫下，25 mg·L^-1褐藻寡糖和壳寡糖分别使发芽率提高75.00%和150.00%；褐藻寡糖处理组大豆总根长和总表面积分别增加30.00%和11.10%，壳寡糖处理组大豆根长、总根长、总表面积和根系总体积分别增加24.00%、35.60%、23.10%和20.10%。褐藻寡糖和壳寡糖还能通过增强抗氧化酶活性维持细胞内活性氧平衡，降低丙二醛含量，增加渗透调节物质含量，有效缓解盐胁迫对膜的伤害，增强根系对土壤养分的吸收。在中盐胁迫下，褐藻寡糖处理组土壤速效磷和速效钾含量分别降低8.20%和3.70%，壳寡糖处理组土壤硝态氮和速效磷含量分别降低33.34%和10.93%，说明寡糖处理能够促进大豆对土壤养分的吸收利用，从而明显促进大豆生长，增强大豆的抗盐性。综上，褐藻寡糖和壳寡糖均能提高大豆植株的抗盐能力，其中壳寡糖比褐藻寡糖对大豆幼苗的抗盐性的促进效果更强。

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