亚热带植物科学2023，Vol.52Issue(6)：481-486,6.DOI:10.3969/j.issn.1009-7791.2023.06.003
萘乙酸对洋葱根系铜胁迫的缓解作用
Mitigation Effect of Naphthalene Acetic Acid on Allium cepa Roots Under Copper Stress
摘要
Abstract
The onion root tip was treated with different concentrations of naphthalene acetic acid(NAA)based on 3 μmol·L-1 copper sulfate solution by hydroponics to explore the alleviation effect of NAA on copper stress.The results showed that 3 μmol·L-1 copper sulfate solution significantly inhibited the onion root growth.The combined treatment of 3 μmol·L-1 copper sulfate solution and 1 μmol·L-1 NAA showed double inhibition and increased SOD activity and MDA content of the roots.While the mitotic index of root tip cells decreased significantly,and the aberration rate increased.The treatment with 10-2 or 10-4 μmol·L-1 NAA significantly promoted the growth of onion roots.Under the co-treatment of 3 μmol·L-1 copper sulfate solution and 10-2 μmol·L-1 NAA,NAA significantly alleviated the copper stress on onion roots,and the onion root growth returned to the control level.Compared with 3 μmol·L-1 copper sulfate solution stress,it was found that this treatment significantly increased the mitotic index,and reduced the aberration rate,SOD activity,and MDA content.It was indicated that NAA at appropriate concentrations significantly alleviated the copper stress on root system.关键词
萘乙酸/洋葱根尖/铜胁迫/染色体畸变Key words
naphthalene acetic acid/onion root tip/Cu stress/chromosome aberration分类
农业科技引用本文复制引用
符献良,李微,郭海滨,张雪莲,李淮源,李楠..萘乙酸对洋葱根系铜胁迫的缓解作用[J].亚热带植物科学,2023,52(6):481-486,6.基金项目
广东省本科高校教学质量与教学改革工程建设项目(粤教高函[2024]9 号) （粤教高函[2024]9 号）
中国农学会教育教学类课题(PCE2215) （PCE2215）
广东省 2022年度普通高校青年创新人才项目(2022WQNCX010) （2022WQNCX010）
广东省高等教学学会"十四五"规划高等教育研究课题(22GQN11) （22GQN11）
广东省高等教育学会实验室管理委员会教改项目(GDJ2022045) （GDJ2022045）
华南农业大学教改项目与质量工程项目(JG2023005) （JG2023005）
