美国玉米杂交种选系1064的选育与利用

Breeding and Utilization of An American Hybrid Breeding Line 1064

为促进玉米育种材料的更新换代,黑龙江省农业科学院齐齐哈尔分院玉米研究室利用美国杂交种先玉335作为种质基础,运用加密筛选、人工接菌鉴定、自然选择、人工自交7代选育出具有抗病抗逆性强、耐瘠薄、脱水快、适应性广、配合力高的新玉米种质1064。通过血缘划分,明确1064血缘关系,并利用不同血缘间杂种优势,成功选育玉米新品种嫩单27、嫩单29和嫩单35。3个品种生育期所需≥10℃活动积温2550~2700℃,适宜组配黑龙江省第一积温带至第三积温带优良玉米品种。

In order to promote the renewal of maize breeding materials,this research group uses the American hybrid Xianyu 335 as the germplasm basis,and uses encrypted screening,artificial inoculation identification,natural selection,and artificialselfing to select 7 generations that have strong disease resistance,resistance to infertility,fast dehydration,and adaptability.By dividing the blood relationship,the blood relationship of 1064 was clarified,and the heterosis among different blood relationships was used to successfully breed new maize varieties Nendan 27,Nendan 29,and Nendan 35.The active accumulated temperature≥10℃required for the growth period of the three varieties was 2550-2700℃,which is suitable for the combination of excellent maize varieties in the first to the third accumulated temperature zone of Heilongjiang Province.