外源腐胺对盐胁迫下黄芩光合特性的影响  

Effects of Exogenous Putrescine on Photosynthetic Characteristics of Scutellaria baicalensis under Salt Stress

作　　者：华智锐 李小玲 

机构地区：[1]商洛学院生物医药与食品工程学院,陕西商洛726000

出　　处：《江西农业学报》2017年第12期59-62,共4页Acta Agriculturae Jiangxi

基　　金：陕西省科技厅项目(2017NY-027)

摘　　要：采取不同浓度外源腐胺(Put)处理盐胁迫下黄芩幼苗的方法,探讨了黄芩光合指标和叶绿素含量随Put浓度改变的变化规律,结果表明:0.5%Na Cl胁迫下的黄芩光合指标和叶绿素含量受到明显抑制;经0.05~0.50 g/L Put处理后,各项指标均出现先升后降的趋势,各光合指标在0.25 g/L Put处理下效果最佳,叶绿素含量在0.25 g/L Put处理下达到最大值。The seedlings of Scutellaria baicalensis under salt stress were treated with different concentrations of exogenous putrescine （Put）,and the change rules of several photosynthetic indexes （net photosynthetic rate,stomatal conductance,transpiration rate,etc.）and chlorophyll content in S. baicalensis seedlings along with the change in Put concentration were explored. Theresults indicated that：under 0.5% NaCl stress,the various photosynthetic indexes and chlorophyll content in S. baicalensis seedlings were obviously inhibited;after being treated with 0.05～ 0.50 g/ L Put,all indexes showed the trend of increasing first andthen decreasing;all photosynthetic indexes were the best under the treatment of 0. 25 g/ L Put;the chlorophyll content alsoreached the maximum value under the treatment of 0.25 g/ L Put.

关 键 词：外源腐胺 盐胁迫 黄芩 光合特性 

分 类 号：S567.239[农业科学—中草药栽培]