高产高淀粉粮饲兼用型玉米新品种丰玉3号选育报告

Breeding Report of A New Grain-forage Maize Cultivar Fengyu 3 with High Yield and High Starch Content

为解决甘肃自育优良玉米新品种较匮乏、外引玉米新品种对甘肃的生态条件较难适应且退化严重的问题,张掖市博丰农业科技有限责任公司采用重离子辐照结合分子标记辅助选择等现代育种方法,以自育自交系BT0521为母本、自育自交系0571为父本杂交选育出了高产高淀粉粮饲兼用型玉米新品种丰玉3号。2012—2013年参加甘肃省玉米中晚熟高密组新品种区域试验,2 a 10点(次)平均折合产量15621.0 kg/hm^(2),较对照品种增产2.7%。其中2012年平均折合产量16536.0 kg/hm^(2),较对照品种郑单958增产5.4%;2013年平均折合产量14706.0 kg/hm^(2),较对照品种先玉335增产2.3%。2014年参加甘肃省玉米中晚熟高密组新品种生产试验,平均产量为16122.0 kg/hm^(2),比对照品种先玉335增产7.8%。丰玉3号在甘肃省张掖市春播生育期132 d,株高273 cm,穗长21.0 cm,穗粗5.2 cm,出籽率88.8%,千粒重347.7 g。容重734.2 g/L。丰玉3号籽粒(干基)含粗淀粉766.0 g/kg、粗蛋白89.7 g/kg、赖氨酸3.1 g/kg、粗脂肪36.9 g/kg,属高淀粉玉米品种。该品种高抗茎基腐病和瘤黑粉病,抗大斑病,中抗丝黑穗病,感矮花叶病和红叶病。适宜在甘肃、新疆及同类生态区种植。

To address the poor adaptability of introduced maize cultivar as well as the lack of premium maize cultivar bred by Gansu,a new grain-forage maize cultivar Fengyu 3 with high yield and high starch content was bred by Zhangye Bofeng Agricultural Technology Co.,Ltd.using self-bred inbred line BT0521 as female parent and self-bred inbred line 0571 as male parent and modern breeding methods such as heavy ion irradiation combined with molecular marker assisted selection.From 2012 to 2013,average yield data from maize regional experiment of Gansu Province(mid-late maturity,high-density planting),taken 10 sites(points)in 2 a,was 15621.0 kg/ha which showed an increase of 2.7%compared with that of the control cultivar.Average yield data in 2012 was 16536.0 kg/ha which was 5.4%higher compared with that of the control cultivar Zhengdan 958,average yield data in 2013 was 14706.0 kg/ha which was 2.3%higher compared with that of the control cultivar Xianyu 335.Average yield data from maize production experiment of Gansu Province(mid-late maturity,high-density planting)was 16122.0 kg/ha which was 7.8%higher compared with that of the control cultivar Xianyu 335.For spring sowing in Zhangye,the growth period was 132 days,the plant height was 273 cm,the ear length was 21.0 cm,the ear diameter was 5.2 cm,seed rate was 88.8%,the 1000-grain weight was 347.7 g and the bulk density was 734.2 g/L.Contents of starch(dry basis),crude protein,lysine and ether extract were 766.0 g/kg,89.7 g/kg,3.1 g/kg and 36.9 g/kg,respectively,therefore this cultivar could be recognized as high starch content cultivar.This cultivar is highly resistant to stalk rot and corn smut diseases,resistant to leaf blight disease,moderately resistant to head smutdisease and susceptible to dwarf mosaic and red leaf diseases,it is considered suitable to be grown in Gansu and Xinjiang Provinces and other areas with similar ecological conditions.