南京林业大学学报 |
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马尾松制浆造纸材良种选育目标及不同变异层次选择策略 徐立安 王章荣 摘 要:以7个试验点12年生马尾松种源试验林及2个试验点11年生优树子代测定林为基础材料,在研究马尾松主要性状不同层次遗传变异的基础上,对马尾松制浆造纸材良种选育目标及在不同变异层次的选择策略进行了探讨。结果表明,马尾松制浆造纸材的良种选育应以材积和木材基本密度作为主要指标,首先进行种源的选择,在此基础上进行林分和个体的选择。种源选择以材积生长为主,不同的造林区应用不同的最适种源:分布区南部选用的优良种源来自该区域内;分布区中部选用的优良种源来自南部种源及中部区域内南部的一些种源;而分布区北部造林应选择分布区中部(特别是北纬26.5°~28.0°区域内)的优良种源。林分选择仅以生长量作为主要指标。而材积和木材基本密度在林分内个体的选择中具有同样的重要性。 Index and Strategy in Different Variation Levels on Selection Breeding for Pulpwood in Masson Pine XU Li-an(College of Forest
Resources and Environment Nanjing Forestry University,Nanjing
210037,China) Abstract:Genetic variations in different levels of masson pine (Pinus massoniana
Lamb.) in main traits were studied on the basis of the 12-year-old data of
provenance tests at 7 test locations and the 11-year-old data of plus progenies
at 2 test locations, and the index and strategy in different variation levels on
selection breeding for pulpwood in masson pine was also discussed. The results
showed that stem volume (V) and wood basic density (BD) were the most important
traits in selection breeding for pulpwood of masson pine and, stand and
individul selections shoud be based on the provenance selection. V was the first
trait in provenance selection for pulpwood. There were different optimum
provenances in different regions: the best provenances in the south of range
were from the same region; the best ones in the middle of range were from the
south of the same region and from the south of range; then the optimum ones in
the north of range were from the middle of range (especially N 26.5°~ 28.0°). V
could be regarded as the only trait in stand selection and both V and BD shoud
be considered in individual selection within
stand. |
基金项目:国家“九五”攻关项目马尾松专题(96-011-01-01) 作者简介:徐立安(1957-),男,江苏江都人,南京林业大学森林资源与环境学院副教授。 作者单位:徐立安(南京林业大学森林资源与环境学院,江苏南京 210037) 王章荣(南京林业大学森林资源与环境学院,江苏南京 210037) 参考文献: [1]王章荣,陈天华. 马尾松木材性状在林分间和林分内个体间的变异[J].
南京林业大学学报,1988, (2):38-42. 收稿日期:2000年8月11日 修稿日期:2001年2月15日 |