摘要
选用子粒锌、铁含量有显著差异的7个玉米自交系,按NCⅡ7×7不完全双列杂交设计组配21个杂交组合进行玉米子粒锌和铁含量的配合力分析。结果表明,7个亲本中,锌含量最高的是亲本178(22.00mg/kg),铁含量最高的是亲本鲁原92(28.29mg/kg);21个杂交组合中,锌含量最高的是丹340×178(20.50mg/kg),铁含量最高的是鲁原92×178(29.95mg/kg)。自交系178和鲁原92子粒锌和铁含量一般配合力效应值显著高于其他自交系,是比较理想的富集锌和铁的亲本。遗传参数分析表明,子粒锌、铁元素含量以非加性方差为主。2005年和2006年7个自交系锌和铁含量的变异分析表明,不同自交系子粒锌、铁含量在年度间的稳定性不同,其中自交系丹340子粒锌、铁含量较高并稳定性好。
The combining ability of Zn and Fe content in maize seed was studied through 7×7 incomplete diallel crossing design by using seven maize inbred lines with different Zn and Fe content. The results showed that among 7 inbred lines, the Zn content of inbred 178 which was 22.00mg/kg and the Fe content of inbred Luyuan 92 which was 28.29mg/kg were the highest, respectively. Among 21 hybrids, the Zn content of the hybrid Dan340 x 178 which was 20.50mg/kg and the Fe content of inbred Luyuan 92 which was 29.95mg/kg were the highest, respectively. The general combining ability of Zn and Fe content in the inbred 178 and Luyuan 92 were higher than that of other inbred lines which indicated that the inbred 178 and Luyuan 92 can increase Zn and Fe content through breeding. The non-additive gene was important for Zn and Fe content in maize seed. According to the Zn and Fe content of 7 inbred lines in 2005 and 2006, the CV analysis indicated that the stability of Zn and Fe content was different among inbred lines and there was the best stability for Zn and Fe content in Dan 340.
出处
《植物遗传资源学报》
CAS
CSCD
2008年第1期36-40,共5页
Journal of Plant Genetic Resources
基金
河北省科学技术研究与发展计划资助项目(04820125D)
河北省"十一五"科技攻关项目(20061148001)
关键词
玉米
锌
铁
配合力
遗传效应
Maize
Zinc
Iron
Combining ability
Genetic effect
