盐胁迫下头状四照花的生理生化反应  

Physiological and Biochemical Reaction of Dendrobenthamia capitata to Salt Tolerance

作　　者：史云光[1] 刘国华[1] 蒋为民[1] 居悦 

机构地区：[1]江苏农林职业技术学院风景园林学院,江苏句容212400

出　　处：《安徽农业科学》2017年第27期180-181,226,共3页Journal of Anhui Agricultural Sciences

基　　金：江苏省农业科技自主创新项目[CX(14)2034];江苏农林职业技术学院项目(2016kj006;28014004)

摘　　要：[目的]研究盐胁迫对头状四照花(Dendrobenthamia capitata)生理生化指标的影响。[方法]在温室内采用盆栽浇灌盐溶液方法对头状四照花3年生实生苗进行试验,研究不同盐分浓度(0、2‰、4‰、6‰)对苗木的膜保护酶超氧化物歧化酶(SOD)活力、过氧化物酶(POD)活力、丙二醛(MDA)含量、叶绿素以及根部活力(TTC)等生理生化指标的影响。[结果]随着盐浓度的增加,SOD、POD活力降低,MDA含量上升,叶绿素含量下降,TTC活力降低。在含盐量低于4‰的盐分胁迫下,头状四照花的生长及生理特性所受影响较小,含盐量超过4‰以上,对植株的生长及生理特性影响较大。[结论]该研究可为丰富盐碱地园林绿化树种提供理论支撑。[Objective]To study influences of salt stress on growth,physiological and biochemical indexes of Dendrobenthamia capitata.[Method]The influences of different concentrations of Na Cl( 0,2‰,4‰,6‰) on SOD,POD,MDA,Chlorophyll and TTC of D. capitata were performed by pot experiment in the plastic greenhouses. [Result]The content of SOD,POD,Chlorophyll and TTC activity decreased with the increase of salt concentration,and the content of MDA increased. The D. capitata seedlings could grow normally with less than 4‰ salt content. The growth and physiological trait were affected by over 4‰ salt content. [Conclusion]This study can provide theoretical support for enriching landscaping tree species on saline land.

关 键 词：头状四照花 盐胁迫 生理生化指标 

分 类 号：S688[农业科学—观赏园艺]