采穗圃以其遗传增益高、投产早、风险小等优于种子园。因此,无性系改良是今后林木遗传改良的发展方向。无性系改良建立在树种容易无性繁殖以及繁殖材料的幼年性和一致性的基础之上,然而许多树种的成年优树并不具备这个条件,组织培养的引入是解决这一矛盾十分有效的一种手段。 Picking garden with its high genetic gain, put into operation early, the risk is small and better than the seed orchard. Therefore, clonal improvement is the future direction of forest genetic improvement. Clonal improvement is based on easy asexual reproduction of tree species and on the juvenile nature and consistency of reproductive materials, however, many of the elite tree species do not have this condition and the introduction of tissue culture is a very effective solution to this contradiction means.