Effects of Different Concentrations of Phlorizin on Root Growth and Physiological Characteristics of Apple Rootstock
Li Boyang
Ren Shenghan
Liu Huaite
Wang Yue
Zhang Xueying
Xu Jizhong
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.
Keywords：PhlorizinTissue-cultured seedlings of apple rootstockRoot architectureActivities of an-tioxidant enzymes
Publication Date：2024-03-28
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：6( 48-53 )