玉米矮秆基因Dt的遗传效应研究  

Study on Genetic Effect of Dwarf Gene Dt in Maize

作　　者：董鲁朋 赵燕[1] 徐长利[1] 李清林[1] 戚秀山 刘莲[1] 刘保申[1] 

机构地区：[1]山东农业大学农学院,山东泰安271018

出　　处：《山东农业科学》2016年第5期1-4,共4页Shandong Agricultural Sciences

基　　金：国家自然科学基金项目(31271734;31071425);高等学校博士学科点专项(20103702110001);农业科技成果转化资金项目

摘　　要：玉米矮生种质资源在玉米育种中具有重要的利用价值。用玉米52333矮秆突变体及其高秆近等基因系分别与Lx9801、C607、C785、S121、郑58和昌7-2等自交系组配得到相应杂交种,研究Dt基因的遗传效应。结果表明：含有Dt基因的材料其植株株高和穗位高显著降低,降幅分别达67~112 cm和34~56 cm;Dt基因使玉米单株果穗在穗长、穗粗、行粒数、穗行数和粒重等方面都有不同程度的下降。通过对玉米矮秆基因Dt的鉴定分析,认为该基因对玉米产量性状具有负效应,不利于玉米增产。Dwarf germplasm resources have significant utilization value in maize breeding. In this study,the hybrids were obtained from maize dwarf mutant 52333 and its near- isogenic lines crossed with inbred lines of Lx9801,C607,C785,S121,Zheng 58 and Chang 7- 2,respectively. With these hybrids as materials,the genetic effect of gene Dt was studied. The results showed that the materials containing Dt gene had remarkably reductions in plant height and ear height,and the reducing amplitude ranged in 67 ~ 112 cm and34 ~ 56 cm,respectively. Dt gene was considered unfavorable for increasing maize yield because of its negative effect on yield characters such as ear length,ear diameter,ear rows,kernel weight per ear.

关 键 词：玉米 矮秆 近等基因系 Dt基因 

分 类 号：S513.035.3[农业科学—作物学]