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一、后代测定的意义杉木优树是按外表性状 (简称表型) 进行选择的。而树木的表型主要是受内在遗传基础的影响,也受环境条件的作用,是两者综合作用的结果。因此,优良的表型,未必具有优良的遗传基础。为了评定选优效果,进一步加强选择,不断提高种子园的质量,增加木材产量,改进木材品质,需通过有性或无性繁殖过
First, the significance of the offspring determination Cunninghamia lanceolata is based on the appearance of the characters (referred to as the phenotype) to choose. The tree phenotype is mainly affected by the inherent genetic basis, but also by the environmental conditions, is the result of the combined effect of the two. Therefore, excellent phenotypes may not necessarily have excellent genetic basis. In order to assess the selection effect, to further strengthen the selection, and constantly improve the quality of the seed orchard, increase timber output, improve the quality of wood, through sexual or asexual reproduction