湖北农业科学 ›› 2022, Vol. 61 ›› Issue (6): 83-87.doi: 10.14088/j.cnki.issn0439-8114.2022.06.016

• 园艺·特产 • 上一篇    下一篇

三种湿地植物对盐胁迫响应的研究

徐扬帆1, 冯立辉1, 陈文峰1, 刘剑彤2, 吴辰熙2, 胡红娟2   

  1. 1.中交第二航务工程局有限公司,武汉 430040;
    2.中国科学院水生生物研究所,武汉 430072
  • 收稿日期:2021-09-26 出版日期:2022-03-25 发布日期:2022-04-18
  • 作者简介:徐扬帆(1993-),男,湖北咸宁人,助理工程师,硕士,主要从事水环境治理研究工作,(电话)15827083891(电子信箱)xyfan3891@163.com。
  • 基金资助:
    中国科学院先导专项(XDA23040401); 中国交通建设集团有限公司水环境生态修复关键技术研究及应用推广(2019-ZJKJ-01)

Study on the response of three wetland plants to salt stress

XU Yang-fan1, FENG Li-hui1, CHEN Wen-feng1, LIU Jian-tong2, WU Chen-xi2, HU Hong-juan2   

  1. 1. CCCC Second Harbor Engineering Company Ltd., Wuhan 430040, China;
    2. Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
  • Received:2021-09-26 Online:2022-03-25 Published:2022-04-18

摘要: 为探明盐胁迫对沿海湿地植物的生理生态响应,以3种典型湿地植物黄菖蒲(Iris pseudacorus L.)、美人蕉(Canna indica)和梭鱼草(Pontederia cordata L.)为试验材料,通过水培试验研究不同盐浓度下(0.5‰、1.0‰、1.5‰、3.0‰)这3种植物的耐盐能力,水培处理期间每隔7 d测定植物的生长及生理指标。结果表明,在盐胁迫下,黄菖蒲、美人蕉和梭鱼草根系增长量、叶宽和植株的增幅整体上均呈上升趋势,当盐胁迫浓度增大,胁迫时间增长,3种植物的生长会出现不同的受抑现象;丙二醛(MDA)含量的变化除了梭鱼草和1.0‰ NaCl胁迫下培养的黄菖蒲呈先降后升外,美人蕉与其余浓度处理的黄菖蒲均表现出先升高后降低的趋势。黄菖蒲、美人蕉、梭鱼草的过氧化氢酶(CAT)活性均呈先升高后降低的趋势。3种湿地植物的耐盐能力为美人蕉>黄菖蒲>梭鱼草。

关键词: 盐胁迫, 湿地植物, 生长状况, 植被修复

Abstract: To ascertain the physiological and ecological response of salt stress to plants in coastal wetlands, three typical wetland plants, Iris pseudacorus L., Canna indica, and Pontederia cordata L.were used as experimental materials to study the tolerance of these three plants under different salinities (0.5‰、1.0‰、1.5‰、3.0‰) through hydroponic experiments. During the hydroponic treatment, the growth and physiological indexes of the plants were measured every 7 days. The results showed that,under salt stress, the growth of root system, leaf width and plant growth of Iris pseudacorus L., Canna indica, and Pontederia cordata L. showed an overall upward trend. When the salt stress concentration and stress time increase, the growth of the three plants will be inhibited in different ways; The change of MDA content except for Pontederia cordata L. and Iris pseudacorus L. cultivated under the stress of 1‰ NaCl, showed a trend from decline to rise. Canna indica and other treatments of Iris pseudacorus L. showed a trend of first increase and then decrease. The CAT of Iris pseudacorus L., Canna indica, and Pontederia cordata L. all showed a trend of first increase and then decrease. The results of this study showed that the salt tolerance of the three wetland plants was Canna indica>Iris pseudacorus L.>Pontederia cordata L..

Key words: salt stress, wetland plants, growth condition, vegetation restoration

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