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搜集和整理20012012年国审普通玉米杂交种及其双亲来源,研究每年国审玉米品种数量的变化趋势,对选育的杂交种在2个以上的亲本自交系进行统计,并分析这些自交系的来源。结果发现,普通玉米杂交种2006年审定的数量最多,年其次,年以后普通玉米杂交种的审定数量在1020个。在对20012012年间国审玉米杂交种亲本来源的分析发现,共有39个亲本自交系组配2个及其以上杂交种,组配杂交种比较多的自交系依次为吉853>丹598>lx9801>昌7-2>京2416>丹340。
Collecting and organizing the source of common maize hybrids and their parents from 2001 to 2012 in China, studying the trend of annual maize varieties in different seasons, counting the more than two parents inbred lines, and analyzing the selfing Department of the source. The results showed that ordinary maize hybrids in 2006 the highest number of validation, year second, year after the approval of ordinary corn hybrids in the number of 1020. Based on the analysis of the origin of the national corn hybrids from 2001 to 2012, we found that 39 inbred lines had 2 or more inbred lines and inbred lines with more hybrids were Ji 853> Dan 598> lx9801> Chang 7-2> Beijing 2416> Dan 340.