玉米新品种正大305的选育研究

Breeding Report of Corn Hybrid Zhenda 305

正大305是以自选系CTL101为母本,自选系CTL102为父本杂交选育的玉米单交种。在各级试验中表现为高产、稳产、多抗,两年区试比对照农大108、郑单958平均增产9.4%,2006年1月通过辽宁省农作物品种审定委员会审定。适宜在辽宁省郑单958种植的地区种植,适宜密度42 000～45 000株/hm2。

Corn single cross Zhengda 305 was bred by inbred line CTL101（Femal） and CTL102（Male） in shenyang research station of north institute of maize research of Chai Tai（WuHan） academy of life science in 2001. The results showed that it has characters of high yield, stability, good quality, mult-resistanee and middle by late mtauring. Its yield increased 9.4% than that of Nongdai 108 and Zhendan 958. It was authorized to apply and popularize by crop authorization committee of liaoning province in 2006. And adopted to Zhendan 958 plant areas of Liaoning province, planting density was 42 000 - 45 000 plants/ha.