湖南生态科学学报2026，Vol.13Issue(1)：28-36,9.DOI:10.3969/j.issn.2095-7300.2026.01.004
淹水胁迫对华中樱生长及生理特性的影响
Analysis of Phenotypic Responses and Physiological Adaptations of Central China Cherry under Flood Stress
摘要
Abstract
[Objective]This study was conducted to explore the adaptive mechanisms of Prunus con-radinae to waterlogging stress,and to provide a scientific basis for water management and waterlogging-re-sistant cultivation of this tree species in Hunan Province.[Method]Three-year-old Prunus conradinae seedlings were selected from Hunan Botanical Garden,and four treatment gradients were set up,including control group(CK),mild stress(T1),moderate stress(T2)and severe stress(T3).A 12-day waterlogging experiment was carried out in an artificial climate chamber using the pot-in-pot method.Leaf phenotypes,root morphology and related physiological indices were measured periodically.[Result]Under waterlogging stress,the phenotypic damage of Prunus conradinae aggravated with the intensification of stress degree and the extension of stress time.Only slight chlorosis was observed on the leaves in the late stage of mild stress,while the leaves turned completely brown and wilted after 12 days of severe stress treatment.The growth indices of roots such as total root length and root tip number de-creased significantly,and the average root diameter decreased continuously without radial thickening.Under mild stress,the activities of superoxide dismutase(SOD),peroxidase(POD)and catalase(CAT)maintained a stable defensive level.In the late stage of moderate and severe stress,the activities of the three antioxidant enzymes all dropped back to a low level in advance.Among all treatments,the degree of oxidative damage of plants under severe stress was the most significant,characterized by a sub-stantial increase in malondialdehyde(MDA)content.Proline accumulation dominated the osmotic ad-justment substances.Soluble sugar content increased continuously with the intensification of stress.Solu-ble protein content accumulated in the short term under mild stress,but decreased continuously under moderate and severe stress.These three substances synergistically maintained cell osmotic pressure.[Conclusion]Prunus conradinae has a certain adaptability to mild waterlogging,with an efficient adapta-tion range limited to mild waterlogging for≤6 days.Waterlogging beyond moderate level exceeds its reg-ulatory capacity.Based on the research results,targeted waterlogging-resistant cultivation strategies were proposed,including site optimization,soil improvement and emergency drainage.It is also suggested that antioxidant enzyme activities and proline accumulation can be used as screening indices for waterlogging resistance.This study provides scientific support for the landscape application and germplasm improvement of Prunus conradinae.关键词
华中樱/淹水胁迫/表型响应/抗氧化酶/渗透调节物质Key words
Prunus conradinae/waterlogging stress/phenotypic response/antioxidant enzyme/os-motic adjustment substance分类
农业科技引用本文复制引用
翟浩展,曹受金,舒曼,欧光梅,熊颖,禹霖..淹水胁迫对华中樱生长及生理特性的影响[J].湖南生态科学学报,2026,13(1):28-36,9.基金项目
湖南省林业科技攻关与创新资金项目(XLK202417),中央财政林业科技推广示范资金项目([2024]XT12) （XLK202417）
