水分胁迫对柳叶白前生长、生理特性及有效成分积累的影响  

Effects of Water Stress on Growth,Physiological Characteristics and Accumulation of Effective Components of Cynanchum stauntonii

作　　者：陈艳清 陈法志 刘金平 易沭远 王湛昌 CHEN Yan-qing;CHEN Fa-zhi;LIU Jin-ping;YI Shu-yuan;WANG Zhan-chang(Forestry and Fruit Tree Research Institute,Wuhan Academy of Agricultural Sciences,Wuhan 430075,China;Xinzhou Technology Service Station of Fruit and Tea,Wuhan 431400,China)

机构地区：[1]武汉市农业科学院林业果树研究所,湖北武汉430075 [2]武汉市新洲区果茶技术服务站,湖北武汉431400

出　　处：《中药材》2024年第4期821-825,共5页Journal of Chinese Medicinal Materials

基　　金：中央引导地方科技专项(2022BGE228)

摘　　要：目的:探究水分胁迫对柳叶白前生长、生理特性及有效成分含量的影响。方法:采用盆栽模拟试验,比较不同土壤水分含量下柳叶白前生长情况的差异。结果:柳叶白前有一定的耐涝性,土壤含水量在30%时单株根茎鲜重最高;土壤含水量在50%(淹水)或干旱状态时,植株的生长受到明显抑制。土壤含水量在30%和40%时,根茎中内源激素IAA、ABA、GA_(3)和叶片中叶绿素含量均显著高于CK组;干旱和淹水状态下,与CK组相比,根茎中丙二醛、ABA含量和保护酶SOD、POD、CAT活性均显著增加,根茎中内源激素IAA、GA_(3)含量均显著下降,叶片中叶绿素a/b的比值显著上升;根茎中总甾体皂苷含量在淹水状态下最高,干旱状态下最低。结论:土壤含水量在30%时最适合柳叶白前植株的生长。Objective:To investigate the effects of water stress on the growth,physiology and effective components contents of Cynanchum stauntonii.Methods:A pot experiment was conducted to compare the growth of Cynanchum stauntonii under different soil moisture content.Results:Cynanchum stauntonii had a certain degree of waterlogging tolerance,the root weight per plant was the highest when the soil moisture content was 30%.When the soil moisture content was 50%(flooded)or drought state,the in rhizomes growth of was significantly inhibited.The contents of endogenous hormones IAA,ABA,GA_(3) in rhizomes and chlorophyll in leaves were significantly higher than CK group when the soil moisture content was 30%and 40%.Compared with the CK group,the contents of malonaldehyde,ABA and the activities of protective enzymes SOD,POD and CAT in rhizomes were significantly increased,the contents of endogenous hormones IAA and GA_(3) in rhizomes were significantly decreased,the ratio of chlorophyll a/b was significantly increased under drought and flooded conditions.The contents of total steroidal saponins in rhizomes were the highest in the flooded state and the lowest in drought state.Conclusion:The soil with a moisture level at 30%is the most suitable to plant growth of Cynanchum stauntonii.

关 键 词：柳叶白前 土壤水分含量 生长指标 生理特性 总甾体皂苷 

分 类 号：R282.2[医药卫生—中药学]