林业科学研究2026，Vol.39Issue(3)：27-34,8.DOI:10.12403/j.1001-1498.20250257
红锥家系心材材质遗传变异及材用型家系选择研究
Genetic Variation of Heartwood Properties and Selection of Timber-use Families of Castanopsis hystrix
摘要
Abstract
[Objective]This study aimed to analyze the genetic variation patterns of heartwood traits in Castanopsis hystrix and to identify superior families for timber production.[Methods]The study was per-formed in a 23-year-old C.hystrix family experimental plantation,including 32 families.Standard samples were collected from the main trunk of selected dominant trees below 4 m in height.Physicomechanical properties of heartwood were measured,and their genetic variation patterns were analyzed.A Superior families for timber-use were implemented by the Breggin multi-trait evaluation method.[Results]The mean values of chrominance(a*),wood density,tangential shrinkage of air-dried wood,compressive strength,and elastic modulus of C.hystrix heartwood were 14.60,0.70 g/cm3,0.53,43.66 MPa,and 10.63 GPa,re-spectively.Family effects were significant or highly significant for all traits,with corresponding family herit-abilities of 0.47,0.47,0.40,0.46,and 0.51,respectively.Three superior families for timber-use,F7,F21 and F27,were selected.The genetic gains for elastic modulus,tangential shrinkage of air-dried wood,density and a* were 9.66%,3.16%,5.41%,3.57%,and 18.93%,6.86%,13.53%,7.59%,respectively.[Conclusion]This study systematically elucidated the effects of genetic factors,environmental factors,and their interactions on heartwood properties of C.hystrix.The results provide a theoretical basis for the com-prehensive evaluation and precise selection of superior timber-use families,and contribute to the genetic improvement and efficient cultivation of C.hystrix.关键词
红锥/心材/家系/遗传变异/综合选择Key words
Castanopsis hystrix/heartwood/family/genetic variation/comprehensive selection分类
农业科技引用本文复制引用
冯宇,郝建,吕仆,刘光金,侯佳,许基煌,申文辉,李秋荔,周红英,刘际斌,邓硕坤..红锥家系心材材质遗传变异及材用型家系选择研究[J].林业科学研究,2026,39(3):27-34,8.基金项目
国家重点研发计划(2024YFD2200105-3) （2024YFD2200105-3）
广西林业科技推广项目(桂林科研[2025KX]第12号) （桂林科研[2025KX]第12号）
