Pedigree method, backcross method and convergent cross selection are used widely in dwarf maize breeding.
矮生玉米自交系的选育方法主要有系谱法、回交法和聚合选择法。
Bimai 15 was bred from crossing Mianyang 11 (female) with 842-644 (male) by means of pedigree method for 8 years in 1992.
毕麦15是用绵阳11为母本，842 - 644为父本，通过有性杂交，经连续8年用系谱法选育，于1992年育成。
'Changjiang No. 3' is a asparagus bean crossed by Zhijiang 28 - 2 and Zhijiaqing variety using pedigree method after 8 - generation selection.
长豇3号是由之豇28-2和指甲青经过有性杂交后，采用系谱法，经8代系统选育而成的。
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