泡桐无性系主要数量性状遗传力的研究

泡桐为我国的重要造林树种,总株数巳达七亿株左右,农桐间作面积2200万亩,遍及20多个省(区、市),已推广的泡桐良种约2亿多株。据估计,全国至少还可发展泡桐10亿株。如能选用优良无性系造林,木材增产的潜力是很大的。为了对已经推广的和将要推广的优良无性系的社会经济效益进行估计,就需要对泡桐的主要性状遗传力及其它遗传参数进行研

THE PRELIMINARY NOTES ON HERITABILITY OF MAIN QUANTITATIVE CHARACTER OF PAULOWNIA CLONES

Some of the informations about heritability of partial quantitative character such as height and breast height diameter of Paulownia clones were collected from early clone test including 23 clones in two sites in different years. The results show that heritability of height in the first year, third and fourth year are 10%, 51% and 53%, and heritability of breast height diameter in the third and fourth year are 59% and 51% respectively. That means the early prediction should be carried out starting from the third to fourth year.