热带亚热带玉米新品种桂单655的选育
2021-11-26谢小东周海宇程伟东江禹奉周锦国覃兰秋谢和霞曾艳华谭贤杰梁忠华
谢小东 周海宇 程伟东 江禹奉 周锦国 覃兰秋 谢和霞 曾艳华 谭贤杰 梁忠华



摘要 桂单655是广西壮族自治区农业科学院玉米研究所选育的高产稳产、优质广适、综合抗性较好的杂交玉米新品种,2018—2019年参加国家热带亚热带玉米组品种区域试验,平均产量为9 300 kg/hm 比对照品种桂单162(平均产量8 366.3 kg/hm2)平均增产1116%,两年分别比对照品种增产7.07%和15.42%,在28个有效试验点中,增产点比例为71.43%。品质分析结果表明,该品种具有较高的粗蛋白质和粗淀粉含量,优质性状突出,说明该品种在我国热带亚热带地区具有极高的推广应用价值。
关键词 热带亚热带;玉米新品种;桂单655;选育
中图分类号 S 513 文献标识码 A 文章编号 0517-6611(2021)21-0049-04
doi:10.3969/j.issn.0517-6611.2021.21.013
开放科学(资源服务)标识码(OSID):
Breeding of a New Tropical-subtropical Maize Variety Guidan 655
XIE Xiao-dong, ZHOU Hai-yu, CHENG Wei-dong et al
( Institute of Maize Research, Guangxi Academy of Agricultural Sciences/Guangxi Sub-center of National Maize Improvement Center, Nanning,Guangxi 530007)
Abstract Guidan 655 is a new hybrid maize variety with high and stable yield, high quality with wide adaptability and good comprehensive resistance selected by the Maize Research Institute of Guangxi Academy of Agricultural Sciences. In the Variety Regional Trial of National Tropical-Subtropical Maize Group in 2018 and 2019, the average yield of Guidan 655 was 9 300 kg/hm2 and the increase of average yield was 11.16% compared with the control Guidan 162 with the average yield of 8 366.3 kg/hm the average yield increased by 7.07% and 15.42% in the two years, respectively. Among the 28 effective test sites, 71.43% of test sites showed yield increase. The results of quality analysis showed that Guidan 655 had high crude protein and coarse starch content with prominent quality characteristics. It was suggested that the variety had a very high value of popularization and application in the tropical-subtropical region of China.
Key words Tropical-subtropical;New variety of maize;Guidan 655;Breeding
基金項目 广西农业科学院基本科研业务专项“玉米种质资源研究”(2021YT017)。
作者简介 谢小东(1986—),男,湖南衡阳人,助理研究员,硕士,从事玉米遗传育种及种质改良研究。*通信作者,研究员,博士,从事玉米遗传育种及种质资源研究。
收稿日期 2021-02-07;修回日期 2021-04-06
玉米是世界上第一大粮食作物,更是一种全功能作物。玉米在我国农业生产中占有极其重要的地位,是我国粮食安全和农业可持续发展的根本保障[1]。玉米新品种的选育需要遗传基础广泛的丰富种质资源以及长期积累的育种技术和经验。玉米种质资源是一个丰富的基因库,遗传基础广泛,蕴含着多种可被利用的性状和潜在的杂种优势群和杂种优势模式,利用潜力巨大[1]。丰富多样的种质资源在品种产量、品质、抗逆性和适应性等性状改良上起着关键作用[2]。……
