elite tree

基本解释

Historically, the elite government officials are generally people with bound volumes of the family tree.
历史上，官宦人家一般都是采用装订成册的家谱。
So it is possible to establish clonal seed orchard as the base of high quality seed production through selecting elite straight grain individual plant (superior tree).
故可以通过选择优良的直纹单株（优树）建立无性系种子园，作为良种生产的基地。
To achieve these goals, genetically-elite families, clones and hybrids produced by tree improvement and biotechnology programs will be planted and managed with intensive silvicultural systems.
为了完成这些目标，优良遗传基因、无性繁殖和杂交改进树木品种，以及生物工程项目，将会集中用于植树造林体系的种植和管理中。