优质早熟糯玉米新品种“庆糯1号”的选育

Breeding of High-quality Early-mature Waxy Maize Variety “Qingnuo 1”

关键词:  糯玉米  “庆糯1号”  优质  早熟  选育

Key words:  waxy maize  “Qingnuo 1”  high-quality  early-mature  breeding

摘要:

[目的]满足市场和生产者对早熟优质糯玉米品种的需要,选育新的糯玉米品种。[方法]2009年秋季开始利用自交系QN331作母本,自交系QN412作父本杂交选育糯玉米单交种,并参加2012年广西春、秋两季糯玉米区域试验。[结果]育成的糯玉米新品种"庆糯1号"具有优质、早熟、高产稳产,糯性高、皮薄、食味佳等特点。"庆糯1号"生育期短,从出苗至采收期,桂南地区春季为74 d,秋季为70 d,区试品质评价总评分86.25分,比对照高1.25分,居参试糯玉米第1位;两季平均鲜果穗产量11 145.00 kg/hm²,比对照增产8.7%;高抗大斑病,中抗茎腐病,抗逆性高于对照,制种产量高。[结论]"庆糯1号"糯玉米2013年6月通过广西农作物品种审定委员会品种审定,适合于广西各地推广种植。

Abstract:

[Objective] New varieties of maize were bred to meet the demand from the market and planters for new high-quality early-mature waxy maize varieties.[Methods] Inbred lines QN331 and QN412 were chosen as the female and male parent for breeding in 2009. And waxy maize regional trials were conducted in spring and autumn in 2012.[Results] The newly bred high-quality early-mature waxy maize variety "Qingnuo 1" had thin skin,good appearance,good taste,and high and stable yield.Its growth duration was short.From seedling to harvest,the growth duration in south Guangxi was 74 d in spring and 70 d in autumn.The total score in regional trial was 86.25 points,which ranked No.1 and was 1.25 points higher than the control.The mean fresh ear yield of the two seasons was 11 145.00 kg/hm² and 8.7% higher than the control."Qingnuo 1" had strong resistance to northern corn leaf blight and medium resistance to stem rot.Its resistance was much better than the control,and its seed production was also higher.[Conclusion] "Qingnuo 1",suitable for extending in different places of Guangxi,was approved and certified by Guangxi Crop Variety Committee in June,2013.