广西师范大学学报（自然科学版）2025，Vol.43Issue(1)：58-64,7.DOI:10.16088/j.issn.1001-6600.2024022903
亚硒酸钠对盐碱胁迫下藜麦生长及抗性的影响
Effects of Sodium Selenite on Growth and Resistance of Quinoa under Salinity Stress
摘要
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.关键词
藜麦/盐碱胁迫/亚硒酸钠/生理特性/根系活力Key words
Chenopodium quinoa/salinity stress/sodium selenite/physiological characteristics/root vigor分类
农业科技引用本文复制引用
严翻翻,张永清,张萌,合佳敏,陈薇薇,景茂雅..亚硒酸钠对盐碱胁迫下藜麦生长及抗性的影响[J].广西师范大学学报（自然科学版）,2025,43(1):58-64,7.基金项目
国家自然科学基金(31571604) （31571604）
