外源水杨酸对阿特拉津胁迫下甜菜幼苗生理特性的影响
Effects of Exogenous Salicylic Acid on Physiological Characteristics of Beet Seedlings under Atrazine Stress
姜炳杉 1佟盟露 1庞彩卫 1王子辰 1丁玉玲 1高金胜 1周芹2
作者信息
- 1. 黑龙江大学现代农业与生态环境学院,哈尔滨 150080
- 2. 黑龙江大学现代农业与生态环境学院,哈尔滨 150080;农业农村部甜菜品质检验测试中心,哈尔滨 150080
- 折叠
摘要
[目的]为探讨外源水杨酸对阿特拉津胁迫下甜菜幼苗毒性的缓解作用.[方法]采用盆栽实验,将甜菜幼苗移栽至阿特拉津浓度为 0.06 mg/kg的土壤中,3 d后喷施不同浓度的水杨酸,15 d后取样测定甜菜幼苗长势及生理生化指标.[结果]与对照组相比,喷施0.50 mmol/L水杨酸对甜菜幼苗毒性缓解效果最为显著,株高和根长分别增加了 90.0%、70.4%,叶绿素含量增加了36.2%,丙二醛和电解质渗透率分别下降了 18.7%、49.0%,超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)活性分别降低59.1%、39.6%、69.3%.[结论]水杨酸能够有效缓解阿特拉津对甜菜幼苗的胁迫作用.
Abstract
[Objective]In order to investigate the mitigating effect of exogenous salicylic acid on the toxicity of sugar beet seedlings under atrazine stress,[Methods]a pot experiment was conducted where beet seedlings were transplanted into the soil with an atrazine concentration of 0.06 mg/kg.After 3 days,different concentrations of salicylic acid were sprayed,and samples were taken to determine the growth and physiological and biochemical indexes of beet seedlings after 15 days.[Results]The results showed that compared with the control group,spraying 0.5 mmol/L salicylic acid had the most significant effect on alleviating the toxicity of beet seedlings.The plant height and root length increased by 90.0%and 70.4%,respectively;chlorophyll content increased by 36.2%;malondialdehyde and electrolyte permeability decreased by 18.7%and 49.0%,respectively;SOD,POD and CAT activities decreased by 59.1%,39.6%and 69.3%,respectively.[Conclusion]Salicylic acid can effectively alleviate the stress effect of atrazine on beet seedlings.
关键词
甜菜/阿特拉津/水杨酸/生理特性Key words
sugar beet/atrazine/salicylic acid/physiological characteristics引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据