山东农业科学2024，Vol.56Issue(3)：48-53,6.DOI:10.14083/j.issn.1001-4942.2024.03.006
不同浓度根皮苷对苹果砧木根系生长及生理特性的影响
Effects of Different Concentrations of Phlorizin on Root Growth and Physiological Characteristics of Apple Rootstock
摘要
Abstract
In this experiment,the apple rootstock tissue-cultured seedlings were used as materials to study the effects of different concentrations(0,0.1,0.5,1.0 and 1.5 mmol/L)of phlorizin on the seedling growth,root system architecture,and root physiological and biochemical characteristics under sand culture conditions.The results showed that compared with the control(CK),the root growth of apple rootstock seed-lings was significantly inhibited by applying phlorizin at different concentrations.The fresh and dry weights of tissue-cultured seedlings decreased significantly;the root length,root surface area,root volume,average root diameter and net growth amount of plant height(except 0.1 mmol/L treatment)were significantly decreased with the increase of phlorizin concentration;the activities of superoxide dismutase(SOD),peroxidase(POD)and catalase(CAT)decreased,and the activities of chalcone synthase,chalcone isomerase and phlorizin hydrolase were also significantly reduced by exogenous phlorizin stress;the contents of MDA,superoxide anion and proline increased significantly,and the soluble protein content decreased significantly.In summary,with the increase of phlorizin concentration,the activities of antioxidant protective enzymes and soluble protein con-tent decreased,the contents of MDA,superoxide anion and proline increased,so the root growth of apple root-stock tissue-cultured seedlings was inhibited and then the growth of seedlings was inhibited.关键词
根皮苷/苹果砧木组培苗/根系构型/抗氧化酶活性Key words
Phlorizin/Tissue-cultured seedlings of apple rootstock/Root architecture/Activities of an-tioxidant enzymes分类
农业科技引用本文复制引用
李博洋,任胜寒,刘怀特,王月,张学英,徐继忠..不同浓度根皮苷对苹果砧木根系生长及生理特性的影响[J].山东农业科学,2024,56(3):48-53,6.基金项目
国家苹果产业技术体系项目(CARS-27) （CARS-27）
河北省重点研发计划项目(21326308D-02-03) （21326308D-02-03）
河北省现代农业产业技术体系水果创新团队项目(HBCT2018100403) （HBCT2018100403）
