前言无性系测定是无性繁殖下,了解、估测无性系个体后代遗传变异规律的方法,有便于早期予估的优点。在初级种子园的基础上进行无性系测定、再选择,是提早建立改良代种子园提高育种效果的途径之一。而如何就嫁接的植株测定各无性系的优劣,并对已有无性系进一步选优,这是当前营建种子园工作中一个突出的问题。本文试就与嫁接苗的无性系测定有关的嫁接效应和砧木效应进行了探讨,提出了一个无性系测定方法。 Introduction Clone determination is the method of asexual reproduction, understanding and estimating the law of genetic variation in offspring of clones, and has the advantage of being easily evaluated in the early stage. Based on the primary seed orchard, clonal determination and re-selection are one of the ways to establish the improved seed orchard in advance and improve the breeding effect. However, how to determine the pros and cons of clones for cloned plants and further optimize the existing clones is a prominent issue in the current construction of seed orchards. In this paper, the grafting effect and rootstock effect related to the clonal evaluation of grafted seedlings were discussed, and a clonal determination method was proposed.