2025年04月13日 星期日

广西师范大学学报（自然科学版） ›› 2025, Vol. 43 ›› Issue (1): 58-64.doi: 10.16088/j.issn.1001-6600.2024022903

• “生态保护与资源可持续利用”专辑 • 上一篇    下一篇

亚硒酸钠对盐碱胁迫下藜麦生长及抗性的影响

严翻翻1, 张永清1,2*, 张萌1, 合佳敏1, 陈薇薇1, 景茂雅1   

  1. 1.山西师范大学 生命科学学院, 山西 太原 030031;
    2.山西师范大学 地理科学学院,山西 太原 030031
  • 收稿日期:2024-02-29 修回日期:2024-05-06 出版日期:2025-01-05 发布日期:2025-02-07
  • 通讯作者: 张永清(1964—),男,山西临汾人,山西师范大学教授。E-mail:yqzhang208@126.com
  • 基金资助:
    国家自然科学基金(31571604)

Effects of Sodium Selenite on Growth and Resistance of Quinoa under Salinity Stress

YAN Fanfan1, ZHANG Yongqing1,2*, ZHANG Meng1, HE Jiaming1, CHENG Weiwei1, JING Maoya1   

  1. 1. School of Life Sciences, Shanxi Normal University, Taiyuan Shanxi 030031, China;
    2. School of Geographic Sciences, Shanxi Normal University, Taiyuan Shanxi 030031, China
  • Received:2024-02-29 Revised:2024-05-06 Online:2025-01-05 Published:2025-02-07

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摘要： 为探究亚硒酸钠对盐碱胁迫下藜麦生长及生理特性的影响,明确其在盐碱胁迫下最适的喷施浓度,选用藜麦“陇藜4号”作为试验材料,采用盆栽试验方法,以亚硒酸钠的不同浓度为变量,采用单因素完全随机设计,设置5个Na2SeO3浓度梯度及对照组,研究不同盐碱胁迫下叶面喷施不同浓度亚硒酸钠对藜麦的株高、茎粗、鲜质量、抗氧化酶活性、渗透调节物质及根系活力的影响。研究结果表明:与对照组相比,盐碱胁迫使藜麦的形态构建、生理特性均受到一定程度损害,甚至影响藜麦的生长发育。叶面喷施亚硒酸钠可缓减盐碱胁迫对藜麦的损伤程度,显著增加藜麦的株高、茎粗、鲜质量,提高藜麦的抗氧化酶活性和渗透调节物质,缓减盐碱胁迫对藜麦膜细胞的损伤,提高藜麦的根系活力,促进藜麦在盐碱胁迫条件下对土壤养分及水分的吸收,最终提高藜麦对盐碱胁迫的抗性。综合隶属函数值结果表明,亚硒酸钠浓度在15 mg/kg时最有利于缓解藜麦受到的盐碱胁迫。综上可知,叶面喷施亚硒酸钠对盐碱胁迫下藜麦生长及生理特性有显著促进作用,且浓度为15 mg/kg时效果最佳。

关键词: 藜麦, 盐碱胁迫, 亚硒酸钠, 生理特性, 根系活力

Abstract: In order to investigate the effect of sodium selenite on the growth and physiological characteristics of quinoa under saline and alkaline stress, and to clarify its optimal spraying concentration under saline and alkaline stress, Long quinoa No. 4 was selected as the experimental material, and a one-factor completely randomized design was adopted using the method of pot planting test, with different concentrations of sodium selenite as the variables, five Na2SeO3 concentration gradients, and control group (without salt stress) were set up to study the effects of foliar spraying with different concentrations of sodium selenite on plant height, stem thickness of quinoa under different saline stresses, fresh weight, antioxidant enzyme activities, osmoregulatory substances and root vigor of quinoa under different saline and alkaline stresses. The results of the study showed that compared with control group, saline stress caused some degree of damage to quinoa’s morphological constructs, physiological characteristics, and even affected the growth and development of quinoa. Through foliar spraying of sodium selenite, the degree of damage to quinoa by saline stress was slowed down, plant height, stem thickness and fresh weight of quinoa were significantly increased, antioxidant enzyme activities and osmoregulatory substances of quinoa were improved, damage to quinoa membrane cells by saline stress was slowed down, root vigor of quinoa was improved, absorption of soil nutrients and water by quinoa under saline stress was promoted, and ultimately quinoa’s resistance of quinoa to salinity stress was improved. The results of the integrated affiliation function values indicated that the concentration of sodium selenite at 15 mg/kg was the most favorable to alleviate the salinity stress of quinoa. In conclusion, foliar spraying of sodium selenite had a significant effect on the growth and physiological characteristics of quinoa under saline and alkaline stress, and the best effect was achieved at a concentration of 15 mg/kg.

Key words: Chenopodium quinoa, salinity stress, sodium selenite, physiological characteristics, root vigor

中图分类号:  S519

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