叶面喷施褪黑素对盐胁迫下西瓜幼苗的影响
Effects of foliar melatonin spray on watermelon seedlings under salt stress
任元龙 1马蓉 1王晓卓 1张雪艳1
作者信息
- 1. 宁夏大学葡萄酒与园艺学院,宁夏 银川 750021
- 折叠
摘要
土壤盐碱化和次生盐渍化是限制西瓜生产的重要因素.本研究选用西瓜品种硒砂瓜金城 5 号为试验材料,分析叶面喷施褪黑素对盐胁迫下西瓜幼苗的影响.研究结果表明,叶面喷施适宜浓度的褪黑素可有效缓解盐胁迫对西瓜幼苗造成的伤害,促进西瓜幼苗生长,提高盐胁迫下西瓜幼苗光合色素含量和抗氧化酶活性,降低丙二醛含量和相对电导率.其中,100 μmol/L褪黑素处理对西瓜幼苗盐胁迫的缓解效果最佳.
Abstract
Soil salinization and secondary salinization are important factors limiting watermelon production.In this study,we used selenium-contained watermelon Jincheng No.5 as experimental material to analyze the effects of foliar appli-cation of melatonin on watermelon seedlings under salt stress.The results showed that spraying melatonin on the leaves could effectively alleviate the damage caused by salt stress on watermelon seedlings,promote the growth of watermelon seed-lings,increase the photosynthetic pigment content and antioxidant enzyme activity under salt stress,and decrease the con-tent of malondialdehyde and relative conductivity.Among them,100 μmol/L melatonin had the best effect on relieving salt stress of watermelon seedlings.
关键词
西瓜/褪黑素/盐胁迫/生长及生理指标Key words
watermelon/melatonin/salt stress/growth and physiological indexes引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据