分析以自交系铁7922为主线的改良进程,明确铁7922改良系与黄系、旅系、黄旅合成系测配组合的优、缺点。以铁7922改良系为基础,添加外来相对应种质进行母本改良,以黄、旅合成系与Lancaster进行父本改良,利用单倍体技术选育区域强势品种。 Analysis of the improvement process with the main line of iron 7922 in inbred line, clear the advantages and disadvantages of the combination of improved lines of iron 7922 and yellow line, travel department, tourism complex of the Yellow Line. Based on the improved line of iron 7922, the corresponding foreign genera were added to improve the female parent, the male parent was improved with the yellow and the broccoli line and Lancaster, and the haploid technique was used to breed strong region varieties.