2003-2012年吉林省玉米审定品种杂交模式分析

对吉林省2003-2012年通过审定的中熟至晚熟熟期组配的272个普通玉米杂交种进行杂交模式分析,探讨在吉林省自然生态条件下不同杂交模式的应用效果,为今后玉米育种提供参考。结果表明:审定品种的亲本自交系来源以国内类群为主,以国外材料为辅。国内类群以Reid,旅大红骨,塘四平头为主,以Lancaster和PN类群为辅。Reid和塘四平头类群总体呈现上升趋势,旅大红骨、PN和Lancaster类群呈现下降趋势。Reid×旅大红骨、PN×旅大红骨和L×T呈现下降趋势,Reid×塘四平头和外杂选×其它类群呈现上升趋势。

Analysis of Hybridization Model of Maize Variety Released in Jilin

272 maize hybrid varieties released from 2003 to 2012 in Jilin were analyzed , and the application effect of different hybridization models under the natural habitat conditions in Jilin were studied to provide some reference for the breeding and utilization of maize hybridization in the future .The results showed that most of the maize hybrid varieties were hybridization .Although the experiment yield of the released varieties had been getting increased every year ,the yield increase was in a narrow range ,and no breakthough variety was obtained.