玉米籽粒铁含量杂种优势及相关分析  

Analysis of the Heterosis and Correlation on the Iron Content in Maize Kernel

作　　者：李华雄[1] 杨克诚[1] 任纬[1] 吴元奇[1] 

机构地区：[1]四川农业大学玉米研究所教育部作物基因资源与遗传改良教育部重点实验室,四川雅安625014

出　　处：《华北农学报》2007年第6期135-138,共4页Acta Agriculturae Boreali-Sinica

摘　　要：以16个玉米自交系,以及将其按Griffing方法4组配的120个杂交组合为供试材料,进行玉米籽粒铁含量杂种优势、亲子相关以及籽粒铁含量与主要农艺、经济性状和品质性状的遗传相关分析。结果表明,杂交种籽粒铁含量以超低亲杂种优势为主,也出现中亲优势和超高亲优势为正值的一些组合。杂交种籽粒铁含量与母本、父本、高值亲本、中亲和高低值亲本之差的相关均达正向极显著水平,与低值亲本的相关达正向显著水平。铁含量与蛋白质、轴重和单株产量的遗传相关达正向极显著水平,与穗重的遗传相关达正向显著水平,与淀粉和油分的遗传相关表现为微弱的负相关和正相关,与穗位高的遗传相关达负向极显著水平。In present and agronomic characters, study, the heterosis, parent-offspring correlation and genotypic correlations between iron content economic characters and qualitative characters were analyzed with 120 crosses composed 16 maize inbred lines by Griffing＇ s diallel method 1V. Heterosis over low parent of iron content of hybrid was mainly, but there were some crosses that their heterosis mid-parent and heterosis over high parent were positive value. Iron content of the hybrid was significantly and positively correlated with those of their female parents, male parents, high-value of parents, mid-value of parents and difference between high-parents and low-parents, and was significantly positive correlated with low-value of parents. In genotypic correlation, iron content was highly significantly and positively correlated to protein, cob weight and yield/plant, and significantly and positively to ear weight, and weakly negative or positive to starch and oil, and highly significantly and negatively correlated to ear height.

关 键 词：玉米 铁含量 杂种优势 亲子相关 遗传相关 

分 类 号：S513.03[农业科学—作物学]