CIMMYT白粒玉米自交系与广西骨干系杂种优势关系的研究  

Heterosis among CIMMYT Lines and Guangxi Key Inbred Lines in White Maize

作　　者：陈天渊 吴永升 马琳 莫芳华 

机构地区：[1]广西玉米研究所,广西南宁530227

出　　处：《西南农业学报》2011年第6期2038-2043,共6页Southwest China Journal of Agricultural Sciences

基　　金：广西自然科学基金项目(桂科自0832219);广西青年基金项目(桂科青0991072);广西基本科研专项(玉200904);广西玉米所博士科研基金项目(201009);国家自然科学基金项目(31060191)

摘　　要：以4份广西白粒骨干玉米自交系(南60-1、改良南60-1、大013和花83-2)与引自国际玉米小麦改良中心(CIMMYT)的6份白粒玉米自交系为材料,按B.Griffing 4模式设计进行配合力分析,研究来自CIMMYT的白粒玉米自交系与广西骨干系的杂种优势情况。研究结果表明,自交系改良南60-1的产量一般配合力效应最高,达到0.58;来自CIMMYT的CML268的产量一般配合力效应次之,其值为0.42。改良南60-1与CML98的产量特殊配合力效应最高,达到1.26。组配的优势杂交组合大部分符合温带系×热带系的杂种优势模式。Four maize inbred lines of Guangxi（Nan60-1,Improved Nan60-1,Da013 and Hua83-2） and six maize inbred lines from CIMMYT were used as material to analyze the combining ability and genetic relationship using the B.Griffing 4 model.The results showed that the efficiency value of GCA（general combining ability） of inbred Improved Nan60-1 was the highest with the value of 0.58.The line CML268 from CIMMYT had a average GCA value 0.42.The line CML98 from CIMMYT had the greatest relative heterosis with the improved Nan60-1,and the average value of SCA was 1.26.Most of the crosses in this study were consistent with the Temperate germplasm×Tropical germplasm heterotic patterns.

关 键 词：白粒玉米 自交系 配合力 杂种优势 CIMMYT 广西 

分 类 号：S513.03[农业科学—作物学]