大麦与谷类科学Issue(4)：1-7,7.
NaCl胁迫对大麦幼苗生长及光合特性的影响
Effect of NaCl Stress on Seedling Biomass and Photosynthetic Characteristics of Barley
摘要
Abstract
This article studied the seeding biomass,salt injury index and photosynthetic characteristics of barley under different con-centration of NaCl stress based on the testing materials of salt resistant 12pj-118 and salt sensitive 12pj-045. The results indicated that with the increase of NaCl concentration,two varieties’fresh weight,dry weight,relative fresh weight and relative dry weight had a downward trend. Under different concentration of salt stress,fresh weight and dry weight of salt tolerance 12pj-118 fell less than salt sensitive 12pj-045. Their relative fresh weight and relative dry weight were greater than 12pj-045. Moreover,their salt injury index was significantly lower than 12pj-045. It′s indicated that the salt resistance of 12pj-118 was better than another’ s. Under the radi-ation intensity of a given simulation light 1 000μmol/m2/s,with the increase of concentration of NaCl,the net photosynthetic rate ( Pn),stomatal conductance( Gs),transpiration rate( Tr)and chlorophyll content of these two varieties had a downward trend. More-over,the change of two varieties’intercellular CO2 concentration( Ci)was inconsistent. Under high concentration of salt stress,,the Pn,Gs,Tr and chlorophyll content of 12pj-118 declined less than salt sensitive 12pj-045.关键词
大麦/NaCl胁迫/光合作用Key words
Barley/NaCl stress/Photosynthesis引用本文复制引用
刘志萍,徐寿军,张凤英,包海柱,孟繁昊..NaCl胁迫对大麦幼苗生长及光合特性的影响[J].大麦与谷类科学,2014,(4):1-7,7.基金项目
农业部现代农业-大麦青稞产业技术体系建设（CARS-05）；内蒙古应用技术研究与开发-特色杂粮大麦新品种选育与配套栽培技术集成研究。 （）
