枫香优树子代测定及家系选择

对2005年在梅州市梅南林场营造的枫香优树子代测定林进行子代测定,结果表明：造林7年时,树高、胸径、材积指标在家系间存在极显著差异,树高、胸径、材积的家系遗传力分别为0.84、0.82、0.83,变异系数分别为14.53%、23.31%和33.45%。依据材积生长量的丰产性和稳定性,选择出广谱家系31个、丰产家系20个,优良家系8个,其材积遗传增益分别为25.26%、35.63%和49.13%。研究结果为进一步开展枫香良种的开发应用奠定了基础。

Plus-trees progeny testing and family selection of Liquidambar formosana

The plus trees of Liquidambar formosana were planted in Meinan Forest Farm in 2005 for the progeny test.The results showed that: seven years later,highly significant differences were observed in height,diameter-at-breast-height(DBH) and individual volume, and their heritability of these three traits were 0.84,0.82 and 0.83. The coefficients of variation were 14.53%, 23.31% and 33.45%, Based on the volume growth of the high and stable yield, high yield, and choose 31 family 20 broad families, 8 superior families, The volume of genetic gain of 25.26%, 35.63% and 49.13% respectively. The results of the study in order to further carry out the development and application of liquidambar thoroughbred laid a foundation.