热带作物学报2025，Vol.46Issue(3)：695-704,10.DOI:10.3969/j.issn.1000-2561.2025.03.017
外源ABA、CaCl2、SA对NaCl胁迫下油茶幼苗生长及生理的影响
Growth and Physiological Effects of Exogenous ABA,CaCl2,SA under NaCl Stress on Camellia oleifera Seedlings
摘要
Abstract
This study investigated the effects of exogenous abscisic acid(ABA),calcium chloride(CaCl2),and salicylic acid(SA)on the growth and physiological characterisics of Camellia oleifera seedlings subjected to NaCl stress,aiming to provide theoretical basis for enhancing the resistance of tea oil plants.One-year-old C.oleifera seedlings were util-ized,and the impact of varying concentrations of ABA,CaCl2,and SA on growth parameters and related physiological indicators was assessed under NaCl stress.Under sole NaCl stress conditiongs,significant increase was observed in height growth,total dry weight,root-to-shoot ratio,soluble protein content,soluble sugar levels,membrane permeability,MDA,H2O2 content,as well as SOD and POD activities in C.oleifera seedlings.Furthermore,external application of different substances under NaCl stress enhanced height growth,total dry weight,soluble protein content,soluble sugar levels while reducing root-to-shoot ratio along with membrane permeability and MDA content in the seedlings.Com-prehensive evaluation using membership function analysis indicated that treatment with 40 mmol/L CaCl2 was most effective in mitigating NaCl-induced damage to C.oleifera seedlings;this was followed by treatments with 200 µmol/L SA and 100 µmol/L SA.关键词
油茶/NaCl胁迫/ABA/CaCl2/SA/生理Key words
Camellia oleifera/NaCl stress/ABA/CaCl2/SA/physiology分类
农业科技引用本文复制引用
刘艳菊,徐玉芬,于钊妍,吴坤林,曹秋林,龚涵,贾效成..外源ABA、CaCl2、SA对NaCl胁迫下油茶幼苗生长及生理的影响[J].热带作物学报,2025,46(3):695-704,10.基金项目
海南省重点研发计划专项(No.ZDYF2023XDNY054) （No.ZDYF2023XDNY054）
海南省自然科学基金青年基金项目(No.322QN414). （No.322QN414）
