宝龙店水曲柳无性系生长早期评价

Early Evaluation of Clonal Growth of Fraxinus mandshurica in Baolongdian

以28个水曲柳无性系为材料,测定其树高、胸径生长性状,进行变异分析,筛选出优良无性系。结果表明:各无性系的树高、胸径极显著相关(P<0.01),无性系间树高、胸径差异均达极显著差异水(P<0.01)。以20%的入选率,初选出无性系1333、1311、1322、1312、1321和1323为优良无性系,6个无性系平均树高生长比总平均值高8.98%,胸径生长比总平均值高10.26%。

28 Fraxinus mandshurica clones were used as materials to determine the growth traits of tree height and diameter at breast height,and conduct variation analysis to screen out superior clones.The results showed that the tree height and diameter at breast height of each clone were extremely significantly correlated(P<0.01),and the differences in tree height and diameter at breast height between clones reached extremely significant differences(P<0.01).With a selection rate of 20%,clones 1333,1311,1322,1312,1321 and 1323 were selected as excellent clones.The average tree height growth of the 6 clones was 8.98%higher than the total average,and the DBH growth was higher than the total average 10.26%higher.