杉木2代种子园子代生长性状遗传变异和家系选择

Genetic Variation of Growth Traits of Filial Generation from Second Generation Seed Orchard of Cunninghamia lanceolata and Family Selection

2015年,对浙江龙泉10年生杉木Cunninghamia lanceolata 2代种子园中38个家系子代的树高、胸径和材积进行测定和分析,同时进行速生型优良家系选择。结果表明,2代种子园子代的树高、胸径和材积在家系间达极显著差异水平(α=0.01),且有较高遗传力和中等的变异系数;采用多重对比法根据材积筛选出7个中期生长表现良好的家系,其树高、胸径和材积分别比对照增加15.15%,18.83%和59.61%。

Determinations and analysis were conducted on height,DBH and volume of38families of10-year filial generation from the second generation seed orchard of Cunninghamia lanceolata in2015in Longquan,Zhejiang province.The results showed that it had great difference of the three growth traits among families(α=0.01),with high heritability and medium variable coefficient.Seven fast-growing families were selected by multiple comparisons,based on volume growth,their height,DBH and volume was15.15%,18.83%and59.61%respectively higher than that of the control.