Taking the 19 families of Liquidambar formosana in Wengyuan County of Guangdong Province
as the research object, seedling height and the growth index of 10.5-year-old young forest were investigated, and
the correlation of growth indexes in two stages was analyzed to provide a theoretical basis for early evaluation on
germplasm resources. The results showed that seedling height was significantly different among nineteen families
(P<0.05), and these differences gradually decreased with the age in nursery stage. Except for forking number,
branching height and leaf color grade, there were significant differences among different families for tree height,
diameter, volume, stem form quality in sapling stage, and average tree height, diameter, volume, branching height,
forking number, stem form quality and leaf color grade of different families were 6.07 m, 6.07 cm, 0.012 2 m3
,
1.90 m, 0.41, 2.36 and 4.75, respectively. Seedling height correlated insignificantly with branching height, forking
number, leaf color grade, but significantly with tree height, diameter and volume; furthermore, these correlations
got stronger with the increasing seedling age. Therefore, it was feasible to make early selection of L. formosana family by use of seedling height.
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