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中国鹅掌楸（Ｌｉｒｉｏｄｅｎｄｒｏｎｃｈｉｎｅｎｓｅ（Ｈｅｍｓｌ．）ｓａｒｇ．）５个地点的群体与个体的生育力３年（１９９１～１９９３）研究结果表明：饱满翅果率为０．４５～１２．７７％，饱满种子率为０．４５～１４．７６％。不同群体间生育率有显著差异，同一群体不同年份间可塑性极大，在一个群体中个体间、聚合果间以及聚合果内不同部位间饱满翅果数的方差份量分别是４９．４６％、３２．９６％和１７．５８％；种于数的方差份量分别为４４．５２％、３４．４０％和２１．０８％。饱满翅果数与总翅果数之间不存在负相关，说明生育力不受资源限制，生育力低的原因可能是花粉限制，通过交配系统的进化与选择以及环境压力而起作用，结果限制了其生殖成功。
The fertility of Liriodendron chinense (Hemsl.) Sarg., A population of 5 sites, was studied in three years (1991 ~ 1993). The results showed that the percentage of full samaron was 0.45 ~ 12.77% The rate of 0.45 ~ 14.76%. The fertility rates of different groups were significantly different, and the plasticity of different populations in the same group was very great. The variance of the number of the full number of samara in individuals, aggregated fruit and different parts of the aggregated fruit was 49.46% .96% and 17.58%, respectively. The variance of the number of species was 44.52%, 34.40% and 21.08% respectively. There is no negative correlation between the number of plumage and the number of plumage, indicating that the fertility is not limited by resources. The reason of low fertility may be pollen restriction, the effect through the evolution and selection of mating system and environmental stress, and the result is limited Its reproductive success.