12个玉米自交系主要性状遗传研究及综合评价  

Evaluation and Study on Genetic Effects of Main Characters for 12 Maize Inbreds

作　　者：汪燕芬[1] 张培高[1] 焦兰[2] 田俊明[1] 徐春霞[1] 龙明丽 付思明 陈洪梅[1] 

机构地区：[1]云南省农业科学院粮食作物研究所,云南昆明650205 [2]广南县农业局,云南广南663300 [3]砚山县种子管理站,云南砚山663100 [4]云南省农业技术推广总站,云南昆明650000

出　　处：《西南农业学报》2015年第2期480-486,共7页Southwest China Journal of Agricultural Sciences

基　　金：云南省重点新产品开发计划项目(2012BB012);云南省技术创新人才培养计划项目(2010CI074);"十二五"农村领域国家科技计划项目(2011BAD35B01)

摘　　要：本研究选取7个热带、亚热带玉米自交系和5个改良后的温带玉米自交系采用Griffing双列杂交方法Ⅳ进行完全双列杂交组配,共配制66个杂交组合。以大面积推广杂交种云瑞6号为对照,对供试自交系不同性状进行配合力和对照优势等分析。结果表明改良后的温带玉米自交系YML582、YML5986和热带、亚热带玉米自交系CML166、YML46单株产量配合力高、综合性状优良,用它们作亲本较易组配出综合性状优良的杂交组合,育种潜力较大;杂交组合YML5986×YML46、YML1216×YML46、YML1071×CML486、YML1071×YML5986、YML582×YML46,综合性状优良,可作为苗头组合进一步试验。A diallel mating experiment was conducted among 12 maize lines-7 tropical, subtropical maize inbreds and 5 temperate maize inbzeds developed by introducing tropical germplasm. Total 66 crosses were made based on Griffing method IV. The objectives of this study were to evaluate correlation coefficient, combining ability, relative heteresis and genetic parameters. The results showed that four lines with excellent comprehensive characters including two tropic, subtropic lines （ CML166 ,YML46） and two temperate lines （YML582,YML.5986） displayed high combining ability for yield per plant. This result suggested that these lines should have high potential in maize hybrid breeding programs, since using these lines as parent should create ideal hybrids. This premise was further verified by the crosses of YML5986 × YML46, YML1216 × YML46, YML1071 × CML486, YML1071 × YML5986, YML582× YML46 that had excellent comprehensive characters.

关 键 词：玉米 一般配合力 特殊配合力 对照优势 

分 类 号：S513[农业科学—作物学]