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巴西橡胶树(Hevea brasiliensis)是多年生乔木树种。用常规方法培育一个良种需要30年时间;另是要从大量的参试材料中,经过长期的各种系比试验才能选出。B·C·Sekhar等指出:马来西亚橡胶研究院从1928年开始执行第一阶段育种计划到1965年第四阶段育种计划完
Hevea brasiliensis is a perennial tree species. It takes 30 years to cultivate a good seed by the conventional method. The other is to select from a large amount of tested materials through long-term various ratio tests. BC Sekhar et al. Point out that the Malaysian Rubber Research Institute has implemented the first-stage breeding program from 1928 to the fourth-stage breeding program of 1965