辽西地区黑杨派纸浆材无性系生长与材性综合评价

Comprehensive Judgement of Section Aigeiros Clones in Western Liaoning Province for Pulp Wood

以辽宁西部的7个黑杨派优良无性系为试材,以13年生的生长量(胸径、树高、)和材性性状(基本密度、纤维长度、壁腔比和1%NaOH抽提物)为指标进行方差分析和遗传参数估算,6个性状在7个无性系间存在极显著或显著差异,胸径和树高的重复力较高。利用灰色关联度分析与DTOPSIS法对7个无性系进行生长与材性综合评价,47号杨的综合表现最好,这两种方法的分析结果在无性系优劣排序上基本吻合,但无性系间的Ci值差异十分明显,而灰色关联度差异不大。此外,还对分析中各性状权重的确定进行了探讨。

Seven clones of section Aigeiros introduced from foreign countries were selected and studied from stands in cold and middle-dry region of western Liaoning Province.For each cultivar,13-year-old height,DBH,basic density,fiber length,and ratio of fiber wideness to space and 1% NaOH extractant of wood were measured and analyszed for variance and genetic parameter.The results showed that there existed significant variability of 6 triats among cultivars and heritabilities were generally high and significat for D...