根据育种目的,正确地选配亲本,这是杂交育种工作中的一个关键性问题。近年来我国做的泡桐有性杂交试验,多以种间组合为主。各地初步试验结果说明,有些种间组合表现比较好,苗木和幼树杂种优势显著,但为数不多。另外还有许多种间组合表现不如亲本。我国泡桐种类较多,分布广泛,种内类型尤为丰富,无论种类或类型都是我们进行人工有性杂交的宝贵原始材料。为了探索泡桐种内杂交的利用价值,我们于1972年至 According to breeding purposes, the correct selection of parents, which is cross-breeding a key issue. In recent years, our country do Paulownia sexual hybridization experiments, mostly interspecific combinations. The results of the preliminary tests all over the world showed that some species combinations performed well, and seedlings and saplings had significant heterosis but few. There are many other combinations that do not perform as well as their parents. Paulownia species more, widely distributed, species species is particularly rich, regardless of the type or type of artificial sexual hybrid we are valuable raw materials. In order to explore the use of Paulownia intraspecific hybridization, we in 1972 to