西南林业大学学报2025，Vol.45Issue(5)：1-6,6.DOI:10.11929/j.swfu.202408001
信丰杉木第3代种子园自由授粉家系遗传变异及早期选择研究
Genetic Variation and Early Selection of Growth Traits in Open-pollinated Progeny of the Third Generation Cunninghamia lanceolata Seed Orchard in Xinfeng
摘要
Abstract
This study is to select superior germplasm for the breeding and production of Cunninghamia lanceolata for Jiangxi Province.Growth traits from open-pollinated progeny of the third generation C.lanceolata seed orchard from Xinfeng County forest seed farm were investigated and analyzed,superior families and indi-viduals were selected.The results showed that,at age 8,the overall mean of tree height,DBH and stem volume was 7.06 m,12.53 cm and 0.053 0 m3,with annual 0.88 m,1.57 cm and 0.0066 m3 growth,respectively.The genetic variation coefficient of tree height,DBH and stem volume was 2.87％,3.66％and 8.65％,respectively.Family heritabilities of these traits were 0.52,0.51 and 0.47,separately.Their individual heritabilities were 0.18,0.14 and 0.13,respectively.Ten families from the total 46 families were selected basing on family stem volume breeding value,with mean value of tree height,DBH and stem volume was 7.36 m,13.33 cm,0.0620 m3,and more 4.55％,6.64％and 17.42％than tested population,respectively.The genetic gain of these traits was 2.36％,3.39％and 8.19％,separately.Furthermore,20 individuals were selected basing on individual stem volume breed-ing value,with mean value of tree height,DBH and stem volume was 8.53 m,18.25 cm,0.1240 m3,and more 21.16％,46.00％and 134.85％than tested population,respectively.The genetic gain of these traits was 3.81％,6.44％and 17.53％,separately.关键词
杉木/种子园/家系/半同胞/自由授粉/子代测定/遗传变异/早期选择Key words
Cunninghamia lanceolata/seed orchard/family/half-sib/open pollination/progeny test/genetic variation/early selection分类
农业科技引用本文复制引用
陈兴彬,刘武阳,朱柯帆,宋晓琛,娄永锋,邱全生,肖复明..信丰杉木第3代种子园自由授粉家系遗传变异及早期选择研究[J].西南林业大学学报,2025,45(5):1-6,6.基金项目
国家重点研发计划项目(2022YFD2200201-04)资助 （2022YFD2200201-04）
江西省重点研发计划项目(20223BBF61005)资助 （20223BBF61005）
江西省林业科技创新项目(202111)资助 （202111）
江西省林业科学院青年科技人才培养项目(2023521101,2024521103)资助. （2023521101,2024521103）
