LIUJie,LIHua,SHIYuan-bao,et al.StudyonColdResistanceof Atriplexnummularia[J].Northern Horticulture,2013,37(16):89-91.
澳洲滨藜的抗寒性研究
- Title:
- StudyonColdResistanceof Atriplexnummularia
- 文章编号:
- 1001-0009（2013）16-0089-03
- Keywords:
- Atriplexnummularia; coldresistance; relativeconductivity; LT50
- 分类号:
- S688；S503.4
- 文献标志码:
- A
- 摘要:
- 采用人工模拟降温处理方法，测定了澳洲滨藜枝、叶在不同低温处理下的电导率与主要渗透调节物质含量变化。结果表明：随着温度的降低，澳洲滨藜枝、叶组织的相对电导率增大，原生质膜的透性增加，枝条萌芽率降低；组织中脯氨酸、可溶性糖含量增加，以通过渗透调节适应低温胁迫。电导法配合Logistic方程求得澳洲滨藜的半致死温度为-11.2℃，其抗寒性差于四翅滨藜。
- Abstract:
- Usingartificialsimulationofcoldtemperaturetreatment，thevariationsofrelativeconductivity，prolinecontent，andsolublesugarcontentinbranchesandleavesof Atriplexnummulariaweretestedandstudiedtodetermineitscoldresistancecharacteristics.Theresultsshowedthattherelativeconductivity，plasmamembranepermeability,prolinecontent，andsolublesugarcontentincreasedwiththedecreasingoftemperature，butitssproutingpercentagedecreased.TheLT 50of A.nummularia was-11.2℃calculatedwithLogisticequation.Sothecoldresistanceof A.nummularia wasworsethanthatofA.canescens.
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备注/Memo
第一作者简介：刘洁（1989-），女，硕士研究生，现主要从事经济林栽培方面的研究工作。
责任作者：曹兵（1970-），男，博士，教授，现主要从事旱区森林培育与经济林栽培生理和城市林业方面的教学与科研工作。E-mail：bingcao2006@126.com.
基金项目：宁夏科技支撑计划重点资助项目。
收稿日期：2013-05-08