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’四字号’玉米杂交种的选育、推广为吉林省、黑龙江省及内蒙古部分地区的玉米品种更换、产量的提高起了重要作用。通过对育成推广的’四字号’玉米杂交种的分析得出:其遗传基础来源于Lancaster、系14、唐四平头、ReidYellowDent、旅大红骨、吉63种质及一些农家品种的改良系。其中20世纪80年代以Lancaster(Mo17和自330两个亚群)、唐四平头、系14和吉63为主;90年代,Reid和旅大红骨系统的应用呈上升趋势,Lancaster和唐四平头类群的应用下降,而系14和吉63已不再应用。还明显看出:92%以上的杂交种都是内外相结合的产物。’四字号’玉米杂交种和自交系的育成对东北两省一区的玉米生产发挥了重要作用,获得了极显著的经济效益。
The breeding and popularization of ’Sihezi’ maize hybrids played an important role in the replacement and yield increase of maize varieties in Jilin, Heilongjiang and parts of Inner Mongolia. Based on the analysis of ’Four Size’ maize hybrids, the genetic basis was derived from the improved lines of Lancaster, Department 14, Tang Siping, Reid Yellow Dent, Luda Honggui, Ji63 and some peasant cultivars. Among them, Lancaster (two subgroups of Mo17 and 330), Tangsiping head, Department 14 and Ji63 dominated the 1980s. In the 1990s, the application of Reid and Luda’s red bone system was on the rise. Lancaster and Tang Siping The decline in the use of taxa, and Department 14 and 61 are no longer applied. It is also obvious that more than 92% of hybrids are the product of internal and external combinations. The breeding of ’Sihezi’ maize hybrids and inbred lines played an important role in maize production in the first two provinces of Northeast China and obtained extremely significant economic benefits.