Analysis on the 293 parental materials commonly used in recent years showed that 220 of them were home-bred clones (75%), of which 56% were produced by Guangzhou Sugarcane Industry Research Institute.
我国近年来使用的293份常用亲本中，220份为自育品种（品系），约占75%，其中广州甘蔗糖业研究所及其下属场选育的材料约占自育亲本材料的56%。
The predecessor of this course is the analysis of the industry in Hebei Institute of Chemical Technology, which was set up in 1975.
该课程最早设置于1975年，其前身为河北化工学院的工业分析。
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