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我国偏北植胶区五十年代初开始橡胶北移,1955年以后开始橡胶树的抗寒选育种工作,抗寒选育种的历史还不到三十年.通过抗寒选育种工作,从植胶初期的普通实生树群体中和国内外引进的无性系中,鉴定选择出相对抗寒品系,这些品系在六十年代作为新的种植材料,比早期的实生树有了提高,而作为杂交育种的亲本,更显示了它们在选育种上的成效.七十年代,抗寒的次生代无性系和以抗寒品系为亲本的有性系提供了抗寒、严量更好的种植材料.八十年代,以抗寒无性系为基础的抗寒、高产三合树开始显示了它的使用价值;高产抗寒有性系在部分地区生产上推广种植;抗寒无性系出现了初露苗头的新
In the early 1950s, the northern part of rubber plantation in our country started to move northward, and cold-resistant breeding of rubber trees started after 1955. The history of cold-resistant breeding was less than 30 years. From the common tree species in the early stage of seeding and in the clones introduced at home and abroad, the relative cold-resistant lines were selected and identified. These lines were used as new planting materials in the 1960s and improved compared with those of the early seedlings. However, The parents of crossbreds also showed their effectiveness in breeding breedings.In the seventies, cold-resistant secondary generation clones and sexual lines with cold-resistant lines as the parents provided cold-resistant and better-quality Planting materials In the 1980s, cold-resistant and high-yielding tri-tree based on cold clones started to show its value in use. High-yielding cold-resistant and sexual plants promoted planting in some areas and cold-resistant clones appeared First appearance of the new signs