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合玉１８，原代号为合２１３，系黑龙江省农业科学院合江农业科学研究所玉米育种研究室育成。１９９８年２月通过黑龙江省农作物品种审定委员会审定，并正式命名为合玉１８。１ 选育经过合玉１８是１９９２年用半马齿型自交系合９１２２２８作母本，中间型自交系合９０１１０?
Heyu 18, the original code for the 213, Department of Heilongjiang Academy of Agricultural Sciences Hejiang Institute of Agricultural Maize breeding research bred. 1998 February Heilongjiang Province approved by the Crop Variety Certification Committee and officially named as Jade 18.1 Breeding through the Jade 18 is 1992 with a semi-dentate inbred line 912228 as the female parent, the intermediate inbred line 90110?