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以江西4个种源14个家系的2年生毛红椿半同胞子代测定林为研究对象,采用R型因子法和多目标局势决策法进行性状评定和筛选。结果表明,不同种源和家系的胸径、树高、高径比、冠幅、冠径比、枝下高、分枝数与抗病虫害、抗寒性指数等均存在显著差异,它们的遗传变异系数为1.75%～52.73%;种源和家系的性状指标遗传力分别在0.21～0.86和0.29～0.75之间;以胸径、冠幅、枝下高、分枝数和抗性指标为主要指标进行综合选择,筛选出优良家系4个(1、2、5、9号),均系官山自然保护区种源。
Two-year-old male to white siblings of 14 pedigrees in Jiangxi province were used as research objects. R-factor method and multi-objective decision making method were used to evaluate and screen traits. The results showed that there were significant differences in DBH, tree height, height to diameter ratio, crown width, crown diameter ratio, branch height, branch number, disease resistance and pest resistance, cold resistance index among different provenances and pedigrees. The coefficient was 1.75% ~ 52.73%. The heritability of traits of provenances and pedigrees were between 0.21 ~ 0.86 and 0.29 ~ 0.75 respectively. The main indexes of DBH, crown width, branch height, branch number and resistance index Comprehensive selection, screening of excellent families 4 (1,2,5,9), are Department of provenance in Guanshan Nature Reserve.