The genetic correlation coefficients of DBH and height among 3 data sets of performances were as high as 1 0 in Japanese larch,so the early selection would be possible in the species.

• 日本落叶松树高和胸径这两个指标 3个年份之间的遗传相关系数都非常高 ,接近 1 0 ,因此开展日本落叶松的早期选择是可行的。