长单46玉米新品种的选育及特征特性

Breeding and the Characters of New Corn Variety Changdan46

长单46是山西省农科院谷子研究所于1998年育成的新品种,组合为92-168×长B57。该品种属中晚熟品种,约需≥10℃有效积温2400℃·d左右。2002～2003年山西省两年区试和生产试验,平均产量10969kg/hm2,比对照农大108增产9.5%;两年共计23个试点有21点增产,增产点次达91.3%。对我省常见6种玉米病害,即大斑病、小斑病、青枯病、穗腐病、矮花叶病和粗缩病均达到中抗以上;子粒商品性好,色泽金黄,容重高(729g/L),粗脂肪含量高(4.84%);耐旱耐瘠,适应性强,无论在多雨年还是干旱年,肥沃田还是瘠薄田,均能获得高产。

Changdan 46 is a new corn variety bred by Millet Institute of Shanxi Academy of Agricultural Science in 1998. Its parents are 92-168 and ChangB57. It is a mid-late-maturing variety and needs effective accumulated temperature of ≥10℃ about 2 400℃·d. An average yield of Changdan46 is 10 969 kg/hm2 and increased by 9.5% than Nongda108CK in the maize regional trial and production trial of Shanxi province in 2002 ～ 2003. Of the whole 23 trials the yield of the 21 trials increased than CK and the percentage was 91.3. It showed mid-disease resistance to the six usual maize diseases in Shanxi province and its kernel quality is fine the content of fat and the volume weight are high4.84% and 720 g/L. Changdan46 has the characteristics of resistante-drought barren resistence and strong adaptablity. Either moisture or dry fertile or infertile it can reach its good production and high yield.