水分胁迫对燕麦苗期光合特性的影响  

Study on Photosynthetic Characteristics of Oat in Seedling Stage under Water Stress

作　　者：齐华[1] 许晶[1] 孟显华[1] 王晓波[1] 刘明[1] 白向历[1] 管宏军[1] 

机构地区：[1]沈阳农业大学,辽宁沈阳110161

出　　处：《农业科技通讯》2009年第5期31-34,共4页

基　　金：辽宁省科学计划项目(2006215008)。

摘　　要：通过干旱后幼苗存活率,从具代表性的14个燕麦品种中选取3个典型抗旱性不同的品种(系),以此为试材进行幼苗期水分胁迫试验,研究其光合特性与抗旱性关系。结果表明:净光合速率(Pn)、气孔导度(Gs)、表观量子效率(α)、光饱和点(LSP)、胞间CO2浓度(Ci)均与燕麦幼苗期抗旱性关系密切,且Pn、Gs、α及LSP与燕麦幼苗期抗旱性呈显著正相关,Ci的降低幅度则与燕麦幼苗期抗旱性呈极显著负相关。Selected three typical varieties of different drought resistance from 14 representative kinds of oat by seedling livability after water stress. We used them do the test of water stress in seedling stage, study on the relations between photosynthetic characteristics and drought resistance. The result shows that Pn, Gs, α, LSP, Ci has great relations with drought resistance of oat in seedling stage. The Pn, Gs, α, LSP shows positive mutuality and the reduce range of Ci shows negative mutuality with drought resistance of oat in seedling stage.

关 键 词：水分胁迫 燕麦 幼苗期 光合特性 

分 类 号：S512.6[农业科学—作物学]