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.
A lot of new high-produced and well qualitative cereals, flowers and antibiotics have been bred by the technique of spaceflight mutation breeding home and abroad.
国内外利用航天诱变育种技术培育了粮食作物、经济作物、花卉及抗生菌等高产优质新品种（系）。
3
Ever since he was a child, he had been fond of pigeons. He bred many kinds of pigeons at home, and bought as many books about pigeons as he could, and studied them very carefully.