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从遗传学的角度来看,一棵树的现实表现好坏,是受它的遗传性和所处的环境条件决定的,三者的关系可用下面一个简单的关系来表达,即:表现型=遗传性+环境。这样,我们所选的优树之所以好,可能是它的遗传品质决定的,也可能是环境条件引起的。如果是后者,用它的后代造林,就不可能保持原来优树的优良特性。所以,选出优树之后还必须进行后代测定,证明确实遗传品质优良者(这样的树可称为原种树或精英
From a genetic point of view, a tree’s performance is good or bad, is determined by its heredity and environmental conditions, the relationship between the three can be used to express a simple relationship, namely: phenotype = Hereditary + Environment. In this way, the optimal tree we choose is good, probably due to its genetic quality, or environmental conditions. If the latter, with its offspring afforestation, it is impossible to maintain the excellent characteristics of the original tree. Therefore, after selecting the elite tree, it is also necessary to carry out the progeny test to prove that the elite genetic quality is good (such a tree can be called an elite tree or elite