江西省优质速生杉木无性系选育研究

Clone Selection of Chinese Fir with Fast-growth and Superior Timber Property

在种源、林分和个体选择的基础上,选育出一批杉木无性系,通过13 a的测定表明,各无性系间胸径、树高、单株材积、无性系木材基本密度和纤维长度差异极显著,且具有较大的广义遗传力。根据杉木无性系培育目标,选择出一批生长、材性兼优的杉木无性系以供生产上应用。12年生入选杉木无性系平均胸径、树高和单株材积、木材基本密度和纤维长分别为16.8 cm、11.0 m、0.133 1 m3、0.319 3 g.cm-3和331 7μm,遗传增益分别为27.99%、8.09%、94.29%、6.72%和4.53%。

Based on 13 years＇ studies, this paper selected some clone of Chinese fir with fast growth and superior timber properties through excellent provenances, population and individual trees. According to investigation data, there were singnifficant differences among those clones in DBH, height, individual volume, wood basal density and fibre length and with high broad heritability. The average of the DBH, height, individual volume, wood basal density and fibre length of those selected clones of Chinese fir were 16.8 cm, 11.0 m, 0. 133 1 m^3, 0.319 3 g·cm^-3 and 331 7μm respectively in 12 years old. The genetic gains on DBH, height, individual volume, wood basal density and fibre length were 27.99% ,8.09% ,94.29% ,6.72% and 4.53% respectively comparing with the contrast.