作　　者： ; ; (沈亚洲）; (马建伟）; (张宋智）;

机构地区： 小陇山林业科学研究所甘肃天水741022

出　　处： 《西南林学院学报》 2012年第2期11-15,共5页

摘　　要： 采用无损检测测定木材材质的Pilodyn指标,研究欧洲黑杨14个无性系间材性遗传差异。室外测定活立木胸径(DBH)和南向Pilodyn值(Ps),室内测定木芯木材基本密度(Ds)、木材外侧基本密度(Dso),按照Ps、Dso及Ds分别将各无性系的平均值排序,3个序列间存在极显著的相关关系。对Ps、Dso和Ds进行方差分析,单株和各无性系平均值间均存在极显著的相关关系;用Ps、Dso和Ds与胸径进行方差分析,单株和各无性系间均存在极显著差异。依据3个材性指标结合胸径将14个无性系分为4类:高密度快生长、低密度快生长、高密度慢生长、低密度慢生长,经方差分析和多重比较,所分的4类无性系各类别间均差异显著,通过分类选择出健杨、8000、95、153、172等5个生长快且木材密度高的欧洲黑杨无性系。 The genetic variation in wood property among 14 clones of Populus nigra was studied by means of measuring the Pilodyn index of the standing living trees in the non-destructive way. The correlations among the Pil- odyn index value and the density indexes of the timber were statistically analyzed by measuring the DBH value and the Pilodyn penetration on the south aspect of the living P. nigra trees （Ps） in the plantation, and by determining the basic density of the core wood （Ds）, the density of outer wood （Dso） in the lab. Based on the mean values of Ps, Dso and Ds indexes of each clone tested, there were extremely significant correlations （ - 0. 832 9 - 0.964 8 ） a- mong the three index serials, There were extremely significant correlations among the P, Do and Ds index values of the individual P. nigra living trees （ -0.825 2 -0. 918 4） , and there were also extremely significant correlations among the means of Ps, Dso and Ds index values of the 14 P. nigra clones （ - 0.887 6 - 0. 974 3 ） respectively. The results of the ANOVA analysis on the values of Ps, Dso and Ds indexes also showed there was remarkable differ- ence in the wood properties among the P. nigra clones. The 14 clones were classified into 4 groups based on the three indexes integrated with the DBH average, i. e. , the high wood density with fast growth rate group; the low wood density with fast growth rate group; the high wood density with slow growth rate group; and the low wood den- sity with slow growth rate grouo. The outcorno of ANOVA analysis and Multiple Comparison analysis proved that therewere significant differences among the 4 groups. 5 clones characterized with fast growing and high wood density, i. e. , No. 8000, ＇Jiangyang＇ , No. 95, No. 153 and No. 172 were finally selected by the clustering analysis results.

关 键 词： 欧洲黑杨 无性系 木材密度 木材外部密度

领　　域： [农业科学] [农业科学]