一个“无性系测定”试验是生根的插条或嫁接的树木按照重复设计栽植的，并在生长几年后进行测定。

A "clonal test" is an experiment in which rooted cuttings or grafted trees are planted according to a replicated design and measured after a period of years.

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经过10 ~ 15年无性系测定后，常常将属于几个家系的25 ~ 50个无性系混合起来，大量投入生产使用。

After 10 to 15 years of clonal testing, mixture of 25 to 50 clones, often belonging to several families, have been released for commercial use.

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本试验共测定了54个短周期桉树无性系在人工气候培养室中的低温胁迫伤害指数和死亡率。

In a controlled chamber stress experiment, we tested the damage index and mortality of cuttings caused by low temperature of 54 short-rotation eucalypt clones.

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