最近十年间橡胶树选育工作的各个方面都发生了变革。最重要的发展是应用现代遗传学来安排杂交,选育出每英亩年产干胶达3000磅(合亩产226.8公斤)的栽培种,以代替四十年代选育的低产无性系和无性系实生树。选种的目的也起了变化,抗风、抗病之类副性状已成为选种的重要项目。同时,在种植材料的推 Changes have taken place in all aspects of rubber tree breeding in the last decade. The most important development is the application of modern genetics to arrange crosses. Breeding up to 3,000 pounds (226.8 kilograms per mu) of cultivars per acre per year is the key to replacing low-yielding clones and clones fortified in the 1940s Real tree. The purpose of selection has also changed, and vice versa such as wind resistance and disease resistance have become important items for seed selection. At the same time, pushing the planting material