Salt Stress Effect on the Growth and Physiological Characteristics of Three New Varieties of Lagerstroemia indica  

盐胁迫对紫薇3个新品种的生长与生理特性的影响（英文）

作　　者：胡卫霞[1] 邱国金[1] 孙其松[1] 郑紫婷 

机构地区：[1]江苏农林职业技术学院,江苏句容212400

出　　处：《Agricultural Science & Technology》2017年第12期2223-2228,共6页农业科学与技术（英文版）

基　　金：江苏省农业科技自主创新资金项目(CX(14)2034);江苏农林职业技术学院合作类项目(2014KJ12)~~

摘　　要：The effects of different concentrations of NaCI （0, 0.10%, 0.25%, 0.40%, 0.55%, 0.70%） on the growth and physiological characteristics of three new varieties of Lagerstroemia indica were studied by pot experiment in the plastic greenhouses. The results showed that under different NaCI concentrations, the relative height in- crement and the relative diameter increment of L. indica were restrained obviously; the contents of chlorophyll a, chlorophyll b, carotenoid and GSH decreased with in- crease of NaCI concentration; and the content of MDA increased with increase of NaCI concentration. Through the determination and comparison of physiological in- dexes, and analysis of correlativity, NaCI tolerance of the three new L. indica vari- eties ranked as L. indica ＇Pink Velour＇〉L. indica ＇Dynamite＇〉L. indica ＇Red Rock- et＇. This is consistent with the results of the morphological characteristics after Na- CI stress.以美国紫薇3个新品种1年生扦插苗为材料,在塑料大棚内采用盆栽浇灌NaCl溶液的方法,研究不同NaCl浓度(0、0.10%、0.25%、0.40%、0.55%、0.70%)对幼苗生长与生理特性的影响。结果表明,在不同盐浓度胁迫下,紫薇3个新品种的相对株高生长量和地径生长量都受到了明显的抑制;叶绿素a、叶绿素b、类胡萝卜素和GSH含量随NaCl浓度的增加而减少;MDA含量随NaCl浓度的增加而增加。生理指标的测定、比较和相关性分析显示,3个新品种的耐盐程度依次为‘红叶’紫薇>‘红火球’紫薇>‘红火箭’紫薇,这与盐胁迫后的形态特征结果相一致。

关 键 词：Salt stress Lagerstroemia indica ＂Pink Velour＇ L. indica ＇Red Rocket＇ L. indica ＇Dynamite＇ Growth Physiological characteristics 

分 类 号：S685.99[农业科学—观赏园艺]