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当前位置: 首页 > 文章 > 涝渍对桃、李幼苗根系酶活性及渗透调节物质含量的影响 河南农业科学 2012,41 (10) 127-130
Position: Home > Articles > Change of Enzyme Activities and Osmotic Regulation Substances in Peach and Plum Seedling Roots Under Waterlogging Journal of Henan Agricultural Sciences 2012,41 (10) 127-130

涝渍对桃、李幼苗根系酶活性及渗透调节物质含量的影响

作  者：
张义;李伟
单  位：
长江大学园艺园林学院
关键词：
毛桃;李;淹水胁迫;无氧呼吸酶;抗氧化酶;渗透调节物质
摘  要：
为了探讨涝渍胁迫对桃和李根部代谢的影响,以1年生索瑞斯李扦插苗和毛桃实生苗为试材,研究了在持续淹水胁迫下,其根系中无氧呼吸酶、抗氧化酶活性以及渗透调节物质含量的变化。结果表明,在持续淹水8d中,二者根系乙醇脱氢酶(ADH)活性均呈降-升-降的变化趋势;乳酸脱氢酶(LDH)活性则先升后降,但李苗LDH活性达最大值时间比桃苗早,达到峰值后李苗下降较慢而桃苗下降迅速;桃苗根系过氧化物酶(POD)活性变化呈先升后降的单峰曲线,而李苗呈升-降-升的双峰曲线,桃苗POD活性峰值比李苗高,而李苗POD保持较高活性持续时间长;过氧化氢酶(CAT)活性均呈降-升-降趋势,二者淹水前CAT活性很高;脯氨酸(Pro)含量均呈升-降-升的变化趋势,而可溶性糖含量变化幅度不大。
译  名：
Change of Enzyme Activities and Osmotic Regulation Substances in Peach and Plum Seedling Roots Under Waterlogging
作  者：
ZHANG Yi,LI Wei (College of Horticulture and Gardening,Yangtze University,Jingzhou 434025,China)
关键词：
Prunus persica(L.)Batsch.;Prunus americana March.;waterlogging;anaerobic respiratory enzyme;antioxidant enzyme;osmotic regulation substances
摘  要：
The aim of this paper is to study the effect of waterlogging on metabolism of peach and plum roots.Using one-year-old cuttings of Prunus americana March.cv.Soriso and one-year-old seedlings of Prunus persica(L.) Batsch.as experiment materials,the change rules of anaerobic respiratory and antioxidant enzyme activities,osmotic regulation substances in their growing roots under waterlogging were studied.Under continuously flooding for 8 days,alcohol dehydrogenase(ADH)activities showed a down-up-down trend in two kinds of materials;lactate dehydrogenase(LDH) activities first increased and then decreased,but in plum the maximum appeared earlier than in peach,and after reaching the peak,dropped more slowly too.Change of peroxidase(POD) activities showed a single peak curve of up to down in peach,and a double peak curve of up-down-up-down in plum;the peak was higher in peach than in plum but higher activity lasted for a long time in plum.Catalase(CAT) activities showed a drop-rise-drop trend and were very high before waterlogging.The content of praline(Pro) showed a rise-drop-rise trend,while the soluble sugar content changed a little.

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