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以１个中国马褂木（Ｌｉｒｉｏｄｅｎｄｒｏｎ ｃｈｉｎｅｎｓｅ（Ｈｅｍｓｌ．） Ｓａｒｇ．）自由授粉家系为对照，对鹅掌楸属２３个种间杂种家系２ａ生苗木生长性状的研究结果表明，在苗高和地径性状上，正交、反交、回交及Ｆ１个体之间相互杂交４种交配系统之间无显著差异，但家系间在两个性状上的差异均达极显著程度（Ｐ＜０．０１）。对于苗高性状，家系平均变异系数为２９．１６％、家系内平均变幅为２．３１ｍ，在地往性状上，家系平均变异系数为３１．８７％、家系内平均变幅为２．６３ｃｍ。因此，在鹅掌楸属种间杂种优势开发中，上述４种交配系统均可采用，重点应进行家系选择和家系内选择。如果选前１０名家系，苗高和地径平均生长量可分别提高８．３０％和９．７３％。选出７株优良单株的平均苗高为３．６８ｍ，平均地径４．４ｃｍ，与杂种家系平均值相比，苗高和地径平均生长量分别可提高４５．８３％和８２．１７％。
Based on a Chinese pollination pedigree (Liriodendron chinense (Hemsl.) Sarg.), The growth characteristics of 2a seedlings of 23 interspecific hybrid families of Liriodendron were studied. The results showed that the seedling height and diameter traits There was no significant difference between the four mating systems in reciprocal cross, cross, cross, backcross and F1 individuals, but there was significant difference between the two traits in pedigree (P <0.01). For the seedling height traits, the average coefficient of variation of pedigree was 29.16%, and the average variation coefficient of pedigree was 2.31m. The average coefficient of variation of pedigree was 31.87% . Therefore, in the development of hybrids between Liriodendron species, the above four mating systems can be used, and the selection of the pedigree and the selection of the pedigree should be emphasized. If the top ten families were selected, the average growth of seedling height and diameter could be increased by 8.30% and 9.73% respectively. The average seedling height of 7 excellent single plants was 3.68m and the average diameter was 4.4cm. Compared with the average value of the hybrids, the average seedling height and average growth of ground diameter were increased by 45.83% and 82.17 %.