盐胁迫对盆栽滁菊生理特性的影响  

Influence of salt stress on physiological characteristics of Chrysanthemum morifolium cv. Chuju

作　　者：王雪娟[1] 周毅[1] 吴燕[1] 连洪燕[1] 刘洁[1] 

机构地区：[1]安徽科技学院城建与环境学院,安徽凤阳233100

出　　处：《广西植物》2014年第6期828-832,共5页Guihaia

基　　金：安徽科技学院自然科学重点项目(ZRC2013368);国家自然科学基金青年基金(31101598);国家星火计划项目(2013GA710076)

摘　　要：以滁菊扦插苗为材料,采用不同盐浓度进行盆栽实验,研究了在不同NaCl浓度(0、100、200、300、400、500 mmol·L-1)下,滁菊的形态及叶绿素含量、可溶性糖含量、脯氨酸含量、MDA含量、叶片伤害率和根系活力等生理指标的变化情况。结果表明:叶绿素含量、根系活力随盐胁迫强度的增强而下降;可溶性糖和MDA含量随盐胁迫强度的增强呈先升后降趋势;叶片伤害率、脯氨酸含量随盐胁迫强度的增强而增加。研究发现滁菊扦插苗能耐受较低浓度的盐胁迫,当盐浓度较高时,其生长受到较大抑制。Cutted seedlings of Chrysanthemum morifolium cv.Chuju were treated with different concentrations of NaCl （0,100,200,300,40,500 mmol·L-1 ）to probe the effects of salt stress.Morphological characteristics,root ac-tivity and contents of stress related components （such as chlorophyll,soluble sugar,proline,and MDA）were meas-ured.The results indicated that with the increase of salinity ,the chlorophyll content and root activity decreased grad-ually,and the contents of soluble sugar and MDA decreased after an initial increase,while the relative electrolytic leakage and proline content increased continuously.The above results suggested that the cutting seedlings of C . morifolium cv.Chuju could tolerate lower concentration NaCl stress,but under higher concentration of NaCl,its growth would be inhibited obviously.

关 键 词：滁菊 盐胁迫 生理指标 

分 类 号：Q945[生物学—植物学]