摘要
Two clonal trial stands of Chinese Fir （Cunninghamia lanceolata） were used in this study, one was 19-year-old stand which included 38 clones, and the other was 17-year-old stand including 102 clones.The statistical analyses showed that there were very significant genetic variations in height, DBH,volume and ratio of heartwood(R<sub>hw</sub>),wood basic density（ρ<sub>b</sub> ） of the clones in the two stands. The repeatability of clones was in median to high level,and the genetic CV was different over the all five traits.There were very significant phenotypic and genetic correlations among height,DBH and volume,and negative correlations among growth, R<sub>hw</sub> andρ<sub>b</sub>.The selection method experiment indicated that index selection could improve volume, R<sub>hw</sub> andρ<sub>b</sub>,showing synthetically superior selection effects compared to any individual trait selection methods.
Two clonal trial stands of Chinese Fir （Cunninghamia lanceolata） were used in this study, one was 19-year-old stand which included 38 clones, and the other was 17-year-old stand including 102 clones.The statistical analyses showed that there were very significant genetic variations in height, DBH,volume and ratio of heartwood(R<sub>hw</sub>),wood basic density（ρ<sub>b</sub> ） of the clones in the two stands. The repeatability of clones was in median to high level,and the genetic CV was different over the all five traits.There were very significant phenotypic and genetic correlations among height,DBH and volume,and negative correlations among growth, R<sub>hw</sub> andρ<sub>b</sub>.The selection method experiment indicated that index selection could improve volume, R<sub>hw</sub> andρ<sub>b</sub>,showing synthetically superior selection effects compared to any individual trait selection methods.
