三江平原玉米品种的种质基础分析

通过对黑龙江省三江平原1999—2004年6年间种植面积在1万hm2以上的玉米杂交种的种质基础的分析,说明三江平原所应用自交系以国外的兰卡斯特及地方种等血缘为主,应用的亲本材料过度集中,造成玉米种质遗传基础日趋狭窄。因此玉米育种工作应加强基础材料的创新,从而拓宽种质资源,解决玉米育种种质资源缺乏,遗传基础狭窄的问题。

The Analyses on the Germplasm Base of Hybrids maize in Sanjiang Plan

The article analyses the germplasm base of hybrids maize from 1999 to 2004 in Sanjiang Plan, HeiLongJiang with plangting areas over 10 thousand hm2, Through this analyses we can know it is inberd line which just like Lancaster and the maize native variety is so the parent material becoming narrower and narrower. So the corn breeding work should strengthen the innovation of the basic material, thus widen the germplasm resources, to solve the short of the corn breeding germplasm resources and the problem of the genetic base narrow.