俄引玉米改良系综合农艺性状评价和抗病鉴定分析

为了提高育种效率,实现玉米育种的持续性和规范化发展,2008年将25个俄罗斯早熟玉米群体与4个我国主要种质类群的代表自交系按照NCⅡ设计组配100个测交组合,2009和2010年对100个杂交组合进行鉴定试验,对25个外引改良系进行综合农艺性状分析和抗病鉴定。结果表明:25份外引改良系中黑育e1、黑育e4、黑育e11和黑育e21的单株产量和产量构成因子等性状表现相对较好。中抗丝黑穗病材料占80%,无高感材料。抗和中抗大斑病的材料共有13份,占全部鉴定材料的52%,48%的材料表现为感病或高感,总体上对大斑病抗性较差。

Evaluation on Agronomic Comprehensive Traits and Identification Analysis on Disease Resistance of Maize Improved Line Introduced from Russian

In order to improve the efficiency of breeding,realize the sustainable and standardized development of maize breeding,25 early-maturing maize groups from Russia and 4 representative inbred lines of major germplasm groups of China were crossed by NC Ⅱ design in 2008,100 crossings were identified in 2009 and 2010,the agronomic traits of 25 introduced improved lines were comprehensive analyzed and the disease identification was conducted.The results showed that Heiyu e1,Heiyu e4,Heiyu e11 and Heiyu e21 of 25 introduced improved lines were performed relatively better in the plant yield,yield components and other traits.The middle disease resistance material to head smut account for 80%,no higher susceptible material.Resistance and middle resistance to maize northern leaf blight materials were 13,account for 52% of all identification materials,48% of the material showed susceptible or highly susceptible,on the whole leaf blight resistance were worse.