偃麦草和中间偃麦草种质材料苗期抗旱性鉴定研究  

Study on the Identification of the Drought Resistance of Elytrigia repens and E. intermedia at Seedling Stage

作　　者：张国芳[1] 孟林[1] 毛培春[1] 

机构地区：[1]北京草业与环境研究发展中心,北京100097

出　　处：《华北农学报》2007年第3期54-59,共6页Acta Agriculturae Boreali-Sinica

基　　金：国家自然科学基金项目(30571321);国家高技术研究发展计划("863"计划)(2002AA241101)

摘　　要：选用来自9个国家的17份偃麦草和中间偃麦草种质材料,在日光温室模拟旱境胁迫条件下,通过土壤干旱法,开展了苗期抗旱性鉴定研究,分析测定了植株叶片的相对含水量、细胞膜透性、脯氨酸含量、丙二醛含量等理化指标,综合评定了17份种质材料的抗旱性强弱,并针对上述4个理化指标变化率,通过赋分分级的办法将其划分为较强、中等、较弱3个抗旱性级别,抗旱性强的种质材料包括Ag-2,Greenar,AJC-320,Reliant,1;抗旱性中等的种质材料包括2,Clarke,D-2111,Slate,DT-3175,D-1483,X93035;抗旱性较弱的种质材料包括D-1987,699,D-939,D-3244,VIR103。Seventeen germplasm and materials of E. repens （L） Nevski and E. intermedia （Host） Nevski from 9 different countries were chosen for the identification of the drought resistance with soil drought stress methods at sunlight greenhouse. Drought resistances of 17 germplasm and materials at seedling stage have been all evaluated through the analysis of physiological and biochemical parameters of relative water content, cell membrane permeability, free proline content and malondaildehyde content in the leaves of these plants. The results showed that 17 germplasm and materials were classified into 3 groups, strong drought resistance, moderate drought resistance and weak drought resistance, according to the variation rates of the related parameters.

关 键 词：偃麦草 中间偃麦草 苗期 抗旱性 鉴定 

分 类 号：S688.4[农业科学—观赏园艺] Q948.123.3[农业科学—园艺学]