安徽农业科学2025，Vol.53Issue(6)：7-10,4.DOI:10.3969/j.issn.0517-6611.2025.06.002
亏缺灌溉对向日葵幼苗生长及喷施SA前后抗氧化酶活性的影响
Effects of Deficit Irrigation on Sunflower Seedling Growth and Antioxidant Enzyme Activity Before and After Spraying SA
摘要
Abstract
With local main sunflower variety as the experimental material,we researched the effects of different deficit irrigation treatments on the growth indexes of sunflower seedling.We also analyzed the effects of different deficit irrigation treatments on SOD activity,POD activity,CAT activity and MDA content before and after spraying SA.The results showed that as the irrigation amount decreased from 80%to 40%,the growth of sunflower seedlings was gradually inhibited,exhibiting mild,moderate,and severe stress phenomena.As the degree of irrigation def-icit increased,the MDA content and SOD activity showed relatively stable levels,while POD activity was significantly inhibited,and CAT ac-tivity showed a trend of first decreasing and then increasing.After spraying SA,as the deficiency degree intensified,the MDA content showed a trend of first stabilizing and then increasing,the SOD activity showed a fluctuating trend,the POD activity showed a decreasing trend,and the CAT activity showed a trend of first increasing and then decreasing.This indicated that spraying SA can effectively enhance the repair abili-ty of sunflowers under mild and moderate water deficit conditions,and had a certain positive effect on water-saving irrigation of sunflowers.关键词
向日葵/水杨酸/抗氧化酶/亏缺灌溉Key words
Sunflower/Salicylic acid(SA)/Antioxidant enzyme/Deficit irrigation分类
农业科技引用本文复制引用
韩海霞,云玉林,宋凯,姚岭柏..亏缺灌溉对向日葵幼苗生长及喷施SA前后抗氧化酶活性的影响[J].安徽农业科学,2025,53(6):7-10,4.基金项目
国家自然科学基金项目(31860510) （31860510）
内蒙古教育厅自然科学一般项目(NJZY22304) （NJZY22304）
乌兰察布市关键技术攻关项目(2021GJ105). （2021GJ105）
