Effect of Potato Extract on its Phenolic Metabolism,SAGs Accumulation and Allelopathic Autotoxicity  

马铃薯浸提液对其SAGs积累、酚类代谢及自毒效应研究(英文)

作　　者：柳永强[1,2] 马廷蕊[3] 杨谋[1,2] 李掌[1,2] 高彦萍[1,2] 

机构地区：[1]甘肃农业科学院马铃薯研究所,甘肃兰州730070 [2]农业部会川马铃薯资源重点野外科学观测试验站,甘肃渭源748201 [3]甘肃省作物遗传改良与种质创新重点实验室,甘肃兰州730070

出　　处：《Agricultural Science & Technology》2011年第5期647-650,658,共5页农业科学与技术（英文版）

基　　金：Supported by Longyuan Young Creative Research Project(GSYS08-A05);Special Fund of Agricultural Science and Technology Innovation in Gansu Province(GSAS0919)~~

摘　　要：[Objective] The paper was to study the effect of potato extract on its phenolic metabolism,SAGs accumulation and allelopathic autotoxicity.[Method] With water treatment as control,the effects of aqueous extracts of potato bud,leaf-stem and tuber on its morphological characteristics,phenolic metabolism,glycoside alkaloids accumulation and allelopathic autotoxicity were studied.[Result] After the treatment of aqueous extract,the germination rate of potato reduced,germination was delayed,the plants became smaller,and the growth of root slowed down;the content of phenolic substances in roots,stems and leaves of potato increased,glycoside alkaloids accumulated,the activity of PPO and PAL increased.The effects of aqueous extract treatment on germination,growth,phenolic metabolism,glycoside alkaloid content and allelopathic autotoxicity successively were bud extractleaf-stem extracttuber extractcontrol.Treatment of aqueous extract did not affect the distribution of phenolic substances and glycosidic alkaloid in potato.[Conclusion] Phenolic substances and glycosidic alkaloid involved in the allelopathic autotoxicity of aqueous extract of potato,which had inhibition effect on germination and growth of potato.[目的]研究马铃薯浸提液对其SAGs积累、酚类代谢及自毒效应。[方法]研究实验清水处理为对照,研究马铃薯芽、茎叶和块茎水浸提液对其形态特征、酚类代谢、糖苷生物碱积累及其化感自毒效应的影响。[结果]水浸提液处理使马铃薯发芽率降低,发芽推迟,植株变小,根生长减慢;水浸提液处理后,马铃薯根、茎和叶片中酚类含量升高,糖苷生物碱积累,PPO和PAL活性升高;水浸提液处理对马铃薯发芽、生长、酚类代谢、糖苷生物碱含量及其自毒效应影响大小依次为芽浸提液>茎叶浸提液>块茎浸提液>对照;水浸提液处理并不影响酚类和糖苷生物碱在马铃薯中的分布。[结论]糖苷生物碱和酚类参与马铃薯水浸液自毒效应对其发芽和生长有抑制效应。

关 键 词：POTATO Aqueous extract Glycosidic alkaloid PHENOL PPO PAL Allelopathic autotoxicity 

分 类 号：S532[农业科学—作物学]