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在树木子代测定中,育种工作者常常面临着决定选择年龄的问题。许多研究者发现,树木很多性状幼年期与晚期显著相关。W. T.Bagley(1976)曾报道美洲黑杨10年生时树高与3年生以上的树高生长相关密切(r=0.61-0.96)。本文是杉木生长性状幼、熟龄之间的相关性以及早期选择等方面的研究结果。一、材料与方法广泛收集福建等省250株杉木树干解析资料,根据树龄和测量年限的不同,分成5组:
In tree progeny assays, breeders often face the problem of deciding their age of choice. Many researchers have found that many traits of trees have significant correlations between juvenile and late stages. W. T. Bagley (1976) reported that tree height at 10 year-old was closely related to tree height growth over 3 years (r = 0.61-0.96). This paper is the result of the research on the correlation between young and mature age of Chinese fir and the early selection. First, materials and methods Widely collected in Fujian province 250 fir trunk analysis data, according to the age of the tree and the measurement of different years, divided into 5 groups: