中早熟春玉米新品种赤单202的选育研究

Breeding of Modium-early Matured New Spring Corn Variety Chidan 202

中早熟春玉米新品种赤单 2 0 2是由赤峰市农科所玉米研究中心用自选半马齿型自交系赤 12 6为母本 ,以国外自交系Mo17为父本杂交育成 ,1999年通过内蒙古自治区农作物品种审定委员会审定命名。该品种在赤峰种植生育日数为 118d ,需≥ 10℃积温 2 6 5 0℃·d ,具有产量水平高抗病、抗倒伏及抗旱耐瘠能力强 ,适应性广的特点。适应在内蒙古干旱区域中肥水地区种植。到 2 0 0 0年赤单 2 0 2已在内蒙的赤峰市、兴安盟、呼市、乌盟、伊盟、黑龙江的肇东、呼兰等地区累计面积 0 85万hm2 。

New moderately and early-maturing variety of spring corn Chidan 202 was obtaimed throug cross of the fewale parent self_bred line Chi 126 with the male parent self_bred line Mo17 by the Corn Research Center of Chifeng Agricultural Sciece Research Institute As a half horse_tooth type,Chi 126 was self-selected,while Mo17 was from abroad 202 had been examined and named by the Crop Variety Examining Committee of the Inner Mongolia Autonomous Region in 1999 The Variety growth duration in Chifeng is 118 days It requires 10℃ accumulative temperatures 2 650℃ d,and the variety is noted for its higher yield,disesse_resistance,lodying_resistance,drought_enduring,barren_enduring and extersive adaptability It is suited to moderately-fertile soil of the arid zones in Inner Mongolia Until 2000 Chidan 202 had been spread to Chifeng,Xinganmeng,Huhehot,Wumeng and Yimeng in Inner Mongolia ,and Zhaodong,Hulan in Heilingjiang and other places,and the accumulative total spreading areas were 8,500 ha,so it's become a major variety for growing in part of these areas