The behaving rule of genetic value was analyzed, the diallel cross from 10 genera in Paulownia taken as materials, by genetic value assessing the hybrid combination and parents.

• 根据泡桐属内10个种的双列杂交材料,用遗传值评定亲本和杂交组合,分析遗传值的表现规律得知,亲本对树高、胸径、枝下高和冠幅有较大影响。