摘要
以贵州都匀种子园子代测定林的9个半同胞家系的11年生木材样品为材料,研究其基本密度、灰分、1%Na OH抽提物、纤维素4项指标的遗传变异规律。结果表明:不同家系间只有基本密度和1%Na OH抽出物差异显著;木材基本密度和化学组分纵向和径向呈多样性变化,共有4种变异类型;纵向树梢部分的灰分含量最高,而纤维素含量最低,都与中部和基部的含量存在显著性差异,树梢部分不适合做纸浆用材;径向中层基本密度非常接近整体平均密度,径向上除灰分外,其余指标差异不显著,且平均值较为接近,木材较为均一;灰分与基本密度呈显著正相关,可以通过基本密度对灰分进行正向选择。
Eleven years old Pinus massoniana from 9 half-sib families in Duyun clonal seed orchard were studied on the genetic variation of the wood samples in 4 wood chemical components,including basic density,ash content,1%Na OH extract and cellulose content. The results indicated that there were significant differences between basic density and 1%Na OH extract. There were 4 types of longitudinal and radial variation in wood basic density and its chemical composition. In vertical,ash and cellulose of the tree tops,where the ash content was the highest and the cellulose content is lowest,were significantly different from those in the middle and basal parts. Therefore,the tree tops are unsuitable for pulpwood. The radial middle wood density was closest to the average density levels of families. The difference of other indexes were not significant with ash exception,and the average value is relatively close at radial direction. Ash content was positively correlated with basic density,and we can make a positive selection of ash through the basic density.
作者
杨雪梅
陈庭巧
赵杨
Yang Xuemei;Chen Tingqiao;Zhao Yang(College of Forestry, Guizhou Lniversity,Guiyang Guizhou 550025,China;Forest Resources and Environment Research Center of Guizhou Province,Guizhou Lniversity,Guiyang Guizhou 550025,China)
出处
《西南林业大学学报（自然科学）》
CAS
北大核心
2018年第3期15-20,共6页
Journal of Southwest Forestry University：Natural Sciences
基金
贵州省重大科技专项项目([2012]6011-2)资助
关键词
马尾松
半同胞家系
木材材性
化学组分
遗传变异
Pinus massoniana
half-sib families
wood properties
wood chemical composition
genetic variation
