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半同胞子代测定的研究于1972年开始,在1977年完成。从这些研究的结果看出,在45个家系之间苗期高生长量在1％平准上是非常显著的。 遗传型×环境互作(GEI)表现的经验值,可借助于互变量的分析来计算。家系×年分(7.39％)、家系×地点(7.36％)和家系×地点×年分(19.91％)的高的方差分量百分率,表现了杉木的GEI是十分显著的。 在杉木育种程序中,应用半同胞子代测验,检验GEI类型是完全可能的。 根据遗传稳定性研究的结果,该种子园内这些家系可分为四种类型:“速生—稳定型”、“中等—稳定”,“变化的”和慢生型”。
The study of half sibling offspring began in 1972 and was completed in 1977. Based on the results of these studies, the high seedling growth among 45 families was very significant at 1% level. Empirical values for genotype × environmental interaction (GEI) performance can be calculated using the analysis of inter-variables. The high percentage of variance components of pedigree × year (7.39%), pedigree × place (7.36%) and pedigree × place × year (19.91%) showed that the GEI of Chinese fir was very significant. In the process of Chinese fir breeding, it is completely possible to test the GEI type by using the half sibling generation test. According to the results of genetic stability studies, these families within the seed orchard can be divided into four types: “fast-growing-stable”, “moderate-stable”, “changeable” and slow-growing.