论文部分内容阅读
本文报道华山松无性系嫁接种子园的36个无性系鉴定。经五年测定结果表明:不同无性系间在高、径生长量上的差异均达到1％的极显著。初步评选出7个优良无性系,其中有3个无性系高生长比群体平均数分别大23.4％、20％、18.3％,胸径生长量分别大21～33.8%。此外,华山松无性系间顶芽数、冠幅和胸径生长与高生长存在着密切的正相关(r=0.66～0.93),回归系数达1％的极显著。初步为华山松改良种子园的建立和表型早期选优提供了一定依据。
In this paper, 36 clones of Pinus armandi clonal grafted seed orchard were reported. After five years of measurement results show that: different clones in the height and diameter growth of 1% of the differences were extremely significant. Seven elite clones were initially selected. Among them, three clones with high height growth were 23.4%, 20% and 18.3% larger than the population average, respectively. The DBH growth was 21-33.8%. In addition, there is a close positive correlation between the top shoot number, crown width and DBH growth and height growth of Pinus armandii clones (r = 0.66 ~ 0.93), and the regression coefficient of 1% is extremely significant. It provided some evidences for the establishment of Huashan pine improved seed orchard and the early selection of phenotype.