柳杉全同胞子代测定林及优良家系选择

分析22年生柳杉全同胞子代测定林的生长性状,结果表明,各杂交组合间差异极显著,树高、胸径、材积的遗传力为0.6左右,1-7年生与22年生的相关系数逐渐增大,但尚未趋于稳定;可筛选出一个树高、胸径、材积增益分别达39.8%、39.5%、128.3%的家系。

Test and selection of Cryptomeria fortunei full-sib progeny

Growth traits of 22-year-old Cryptomeria fortunei full-sib progeny were analyzed and results showed that difference among families was extremely significant.The heritability of tree height,DBH and volume was about 0.6.Compared with the age 22,the correlation coefficients from age 1 to age 7 increased gradually,but were not stable.An excellent family has been selected,and its average genetic gains of tree height,DBH and volume were 39.8%,39.5% and 128.3%,respectively.