寒旱农业科学2024，Vol.3Issue(8)：734-739,6.DOI:10.3969/j.issn.2097-2172.2024.08.007
外源物质对盐碱胁迫下垂丝海棠生长及生理特性的影响
Effects of Exogenous Substances on the Growth and Physiological Characteristics of Malus halliana under Salt-alkali Stress
摘要
Abstract
In order to explore effects of melatonin and 2,4-epibrassinolide to alleviate the damage of combined salt-alkali stress on Malus halliana,in this experiment,the seedlings of Malus halliana with 9 to 10 leaf ages were used as the test material.Three treatments were set,i.e.,200 μmol/L melatonin spray,200 μmol/L melatonin+0.2 mg/L 2,4-table brassinolide overlay spray and 0.2 mg/L 2,4-table brassinolide spray,to study the effects on chlorophyll content,relative conductivity,water content,antioxidant enzyme activity,free proline content and photosynthetic fluorescence parameters of leaves under salt-alkali stress.The results showed that exogenous application of melatonin and 2,4-epbrassinolide could significantly improve the relative conductivity,proline content and antioxidant enzyme activity of leaves under salt-alkali stress,and reduce the relative water content and chlorophyll content of leaves,so as to alleviate the inhibition of salt-alkali stress on the growth of Malus linus.In this experiment,the alleviating effect from high to low was melatonin,2,4-epbrassinolide,and the combination of the two.关键词
垂丝海棠/盐碱胁迫/褪黑素/2,4-表油菜素内酯Key words
Malus halliana/Salt-alkali stress/Melatonin/2,4-epibrassinolide分类
农业科技引用本文复制引用
达建东,郭润霞,高立杨,李平..外源物质对盐碱胁迫下垂丝海棠生长及生理特性的影响[J].寒旱农业科学,2024,3(8):734-739,6.基金项目
武威市自然科学基金(WW23A03RPZ006). （WW23A03RPZ006）
