马尾松纸浆性能在家系间的遗传差异

Genetic Differences of Pulping and Papermaking Properties between Open pollinated Families of Masson Pine

对１３ 年生２０ 个马尾松自由授粉家系１００ 株树木进行硫酸盐法制浆试验， 研究未漂硫酸盐木浆品质和物理性能在家系间的遗传差异。除耐破指数外， 观察到其他成浆性能在家系间都存在着巨大的遗传差异， 受较强的遗传控制。性状相关分析发现， 木材密度和热水抽出物含量似是预测成浆性能较可靠的间接选择指标。基于单株纸浆产量、吨干浆材耗量和成浆物理性能的综合考虑， 可评选出８ 个纸浆材优良家系。

trees from twenty open pollinated families of masson pine were chipped,screened and pulped using the kraft process to investigate the genetic differences of properties of unbleached kraft pulp between the families.Great differences between and within the families were observed for most properties of the pulps,except for burst index.Heritabilities of these traits indicated a strong degree of genetic control.Correlation analysis suggested that wood density and hot water extractive could be recommended as two indirect selection criterion.Based on kg fiber per tree,wood consumption per dry ton of pulp and kraft pulp properties,eight superior families for pulpwood were selected from twenty families with fast growth.