淹水胁迫及排涝对四种菊科宿根花卉生理特性的影响  

Effects of flooding stress and drainage on physiological characteristics of four perennial flowers of Compositae

作　　者：刘洋[1] 韩涛[1] 张鸿翎[1] 刘集锋 LIU Yang;HAN Tao;ZHANG Hong-ling;LIU Ji-feng(Forestry College,Inner Mongolia Agricultural University,Hohhot 010018,China)

机构地区：[1]内蒙古农业大学林学院,呼和浩特010018

出　　处：《湖北农业科学》2022年第15期133-139,共7页Hubei Agricultural Sciences

基　　金：国家自然科学基金项目(3156030025)。

摘　　要：研究了淹水及排涝处理对4种菊科宿根花卉生理生化特性的影响,由此揭示其对淹水胁迫的响应及抗性差异,为日后园林绿化提供参考。采用双套盆法,对4种菊科宿根花卉进行淹水胁迫处理,测定4种菊科宿根花卉叶片的相对含水量(RWC)、游离脯氨酸(Pro)、可溶性蛋白质(SP)、可溶性糖(SS)、丙二醛(MDA)及叶绿素(Chl)等生理生化指标,并进行综合评价分析。结果表明,淹水胁迫下4种花卉的RWC、SS含量总体先升后降;Pro、MDA含量总体不断增加;SP含量宿根天人菊(Gaillardia aristata)和夏菊(Chrysanthemum morifolium)为先升后降再升,野菊花(Dendranthema indicum)和千叶蓍(Achillea millefolium)为先升后降;Chl含量为先降后升再降的变化趋势。4种花卉通过提高渗透调节物质含量来维持细胞稳定性,这些物质相互协调提高其抗涝能力,从而减轻水分胁迫的伤害。排涝后,4种花卉生理状态均有所恢复。4种宿根花卉在抵御淹水胁迫方面存在一定差异,通过隶属函数法分析评价发现抗涝性强弱为夏菊>千叶蓍>野菊花>宿根天人菊,运用主成分分析法对抗涝性指标重要性进行排序,由大至小依次为Pro、MDA、SS、Chl、SP、RWC。The effects of flooding and drainage treatments on the physiological characteristics of four perennial flowers of Compositae were studied,which revealed their response to flooding stress and differences in resistance,and provided theoretical experimental ref⁃erences for future landscaping.The double-pot method was used to treat them with flooding stress,and physiological and biochemical indicators such as the relative water content(RWC),free proline(Pro),soluble protein(SP),soluble sugar(SS),malondialdehyde(MDA)and chlorophyll(Chl)of four perennial flowers of Compositae family were measured,comprehensively evaluated and ana⁃lyzed.The results showed that,under flooding stress,RWC and SS contents of four flowers increased first and then decreased;Pro and MDA contents increased continuously;SP contents of Gaillardia aristata and Chrysanthemum morifolium increased first,then de⁃creased and then increased,and those of Dendranthema indicum and Achillea millefolium rose first and then fell;Chl content was a trend of decreased firstly,then increased and then decreased.The four kinds of flowers maintain cell stability by increasing the content of osmotic adjustment substances,which coordinate with each other to improve their anti-waterlogging ability,thereby reducing the damage of water stress.After the waterlogging was drained,the physiological states of four flowers all recovered.The four perennial root flowers had certain differences in resisting waterlogging stress.Through the analysis and evaluation of the membership function method,it was found that the strength of the resistance to waterlogging was in the order of Chrysanthemum morifolium>Achillea mille⁃folium>Dendranthema indicum>Gaillardia aristata.Principal component analysis was used to rank the importance of waterlogging resistance indexes,from large to small:Pro,MDA,SS,Chl,SP,RWC.

关 键 词：宿根花卉 淹水胁迫 排涝 生理指标 隶属函数 

分 类 号：S682.1[农业科学—观赏园艺]