玉米Reid类自交系具有高配合力、自身产量高、商品品质优、种子早发性好、适宜精量播种的优点，缺点是不抗玉米大斑病，选用同为Reid类种质且高抗玉米大斑病的自交系33D22与其杂交作为选系基础材料，通过大群体、高密度、人工接种的方法育成抗大斑病、高产、优质、高配合力的自交系吉D284和吉D2417，以其作为亲本分别育成了玉米新品种吉单616和吉单626，均于2021年通过吉林省审定，同时还有一批苗头组合正在参加各级各类试验，有望继续通过审定。

Reid inbred lines of maize have the advantages of high combining ability,high yield of self,good commodity quality,good seed early-onset and suitable for precise sowing,but the disadvantage is that they are not resistant to northern leaf blight of corn.Hybridization with the inbred line 33D22 which have Reid germplasm and high resistance to northern leaf blight of corn was selected as the basic material of selection.The inbred lines JiD284 and JiD2417 with resistance to northern leaf blight of corn,high yield,high quality and high combining ability were developed by large population,high density and artificial inoculation.They were used as parents to develop the new maize varieties Jidan 616 and Jidan 626,which were approved by Jilin Province in 2021.As well,a number of promising combinations are participating in various tests at all levels,which are expected to continue to pass the examination.

长春市科技发展计划项目（21ZGN06）；吉林省农业科技创新工程项目（CXGC2021TD112）；吉林省科技发展计划项目（20210302006N C）