【摘要】 为给广西大叶栎（Castanopsis fissa）育种和生产筛选优良种质材料，对71个5年生大叶栎优树子代半同胞家系和1个对照进行生长性状测定，开展生长性状遗传分析及优良家系和单株选择。结果表明，72个家系平均胸径、树高和单株材积分别为11.83 cm、10.09 m和0.066 m~3；胸径、树高和单株材积年均生长量分别为2.37 cm、2.02 m和0.013 m~3，平均变异系数分别为23.14%、16.56%和50.96%，平均遗传增益分别为6.03%、3.19%和17.24%，平均现实增益分别为9.01%、6.08%和25.73%。胸径、树高和单株材积家系遗传力分别为0.669 3、0.524 0和0.669 9，单株遗传力分别为0.320 1、0.300 1和0.348 7。选出7个优良家系，其平均胸径、树高和单株材积分别为13.16 cm、10.96 m和0.084 m~3；胸径、树高和单株材积年均生长量分别为2.63 cm、2.19 m和0.017 m~3，平均遗传增益分别为14.28%、8.03%和41.49%，平均现实增益分别为21.33%、15.33%和61.93%。选出13个优良单株，其平均胸径、树高和单株材积分别为18.82 cm、13.48 m和0.187 m~3；胸径、树高和单株材积年均生长量分别为3.76 cm、2.70 m和0.037 m~3，平均遗传增益分别为23.48%、12.55%和90.12%。更多还原

【Abstract】 In order to screen superior germplasm materials for Castanopsis fissa breeding and production in Guangxi, growth traits of seventy-one 5-year-old progeny half-sib families of C. fissa superior trees and one control were determined, and genetic analysis on growth traits and selection of superior families and individuals were conducted. Results showed that average DBH, tree height and individual volume of seventy-two families were 11.83 cm, 10.09 m and 0.066 m3 respectively. Average annual growths of DBH, tree height and individual volume were 2.37 cm, 2.02 m and 0.013 m3 respectively, with average coefficients of variation 23.14%, 16.56%and 50.96% respectively, average genetic gains 6.03%, 3.19% and 17.24% respectively, average realistic gains9.01%, 6.08% and 25.73% respectively. Family heritabilities of DBH, tree height and individual volume were0.669 3, 0.524 0 and 0.669 9 respectively, individual heritabilities of which were 0.320 1, 0.300 1 and 0.348 7 respectively. Seven superior families were selected, with average DBH, tree height and individual volume of13.16 cm, 10.96 m and 0.084 m3 respectively. Average annual growths of DBH, tree height and individual volume of seven superior families were 2.63 cm, 2.19 m and 0.017 m~3 respectively, with average genetic gains14.28%, 8.03% and 41.49% respectively, average realistic gains 21.33%, 15.33% and 61.93% respectively.Thirteen superior individuals were selected, with average DBH, tree height and individual volume of 18.82 cm,13.48 m and 0.187 m3 respectively. Average annual growths of DBH, tree height and individual volume of thirteen superior individuals were 3.76 cm, 2.70 m and 0.037 m~3 respectively, with average genetic gains 23.48%,12.55% and 90.12% respectively.更多还原