抗倒伏高产玉米新品种'金岭青贮17'的选育
Breeding of New Corn Variety'Jinling Silage 17'with Lodging Resistance and High Yield
刘倩 1李志勇 1金维波 2杨晓东 3何为平 3赵淑芬 2武自念1
作者信息
- 1. 中国农业科学院草原研究所,呼和浩特,010010
- 2. 内蒙古金岭青贮玉米种业有限公司,赤峰,024000
- 3. 内蒙古自治区草原工作站,呼和浩特,010020
- 折叠
摘要
倒伏是影响青贮玉米高产和机械收获的一个重大难题.为培育具有抗倒伏特性的高产优质青贮玉米品种,本试验将兼具抗倒伏性和丰产特性的亲本J178A与J340B杂交,历时10年选育出了中晚熟玉米新品种'金岭青贮17'.本品种延续亲本抗倒伏性的同时具有丰产稳产性,多年试验平均鲜重产量达90612kg/hm2,平均干物质产量达29 495 kg/hm2,较对照品种增产16.2％,差异极显著(P＜0.01);且饲喂价值高,干物质含量31.3％,粗蛋白含量9.62％,无氮浸出物54.13％,同时具有抗逆性强,高效节水的优点.'金岭青贮17'在北方春播出苗至青贮收获118 d,宜在有效积温2 600 ℃以上的地区推广.
Abstract
Lodging is a severe problem affecting high yield and mechanical harvesting of silage corn.For the pur-pose of breeding new silage corn varieties with high lodging resistance,high-yield and good-quality,a mid-late maturing cultivar'Jinling silage 17'was bred from a 10-year program by crossing parents J178A and J340B with high lodging resistance and yield.The new cultivar inherited high lodging resistance from its parents and showed stability of high yield.The average fresh yield of'Jinling silage 17'was 90 612 kg/hm2,and average dry matter yield was 29 495 kg/hm2,which were 16.2％superior than the reference variety(P＜0.01).Meanwhile,the dry mat-ter content of'Jinling silage 17'was 31.3％,crude protein content was 9.62％and nitrogen free extract content was 54.13％,insuring its high feeding value.Besides,'Jinling silage 17'was a disease-resistant,water-saving variety with a growth period of 118 days,enabled it to be popularized in those areas with effective accumulated tempera-ture above 2 600 ℃.
关键词
全株玉米青贮/杂交育种/抗倒伏/品种选育Key words
Whole-plant corn silage/Cross breeding/Lodging resistance/Variety selection引用本文复制引用
出版年
2024
NETL
NSTL
万方数据