广西林业科学2025，Vol.54Issue(4)：400-409,10.DOI:10.19692/j.issn.1006-1126.20250406
桂西南国外松优良家系早期选择
Early Selections of Superior Exotic Pine Families in Southwestern Guangxi
摘要
Abstract
In order to provide basis for selection and utilization of superior germplasm resources of exotic pines,16 6-year-old exotic pine families(including full-sib families of Pinus elliottii×P.caribaea,half-sib families of Pinus elliottii female parent and half-sib families of Pinus caribaea var.hondurensis male parent)were used as research materials.Using mixed families of first-generation seed orchard of Pinus massoniana(CK1)and mixed families of 1.5-generation seed orchard of P.elliottii(CK2)as controls,early growth traits and parental contributions were evaluated through analysis of variance,genetic analysis and gain estimation.Superior fami-lies and individuals were selected.Results showed that there were significant differences in growth traits among 16 families,and variations were rich.Individual volumes of 13 families exceeded both CK1 and CK2.Full-sib families of P.elliottii×P.caribaea showed significant heterosis.Male parent effect significantly enhanced proge-ny growth performance,and male parent and female parent interaction generated significant heterosis in full-sib families.Using individual volume as selection index,7 superior families were preliminarily selected.Aver-age individual volume of 7 superior families was 0.055 6 m³,which was 47.48%and 46.32%higher than those of CK1 and CK2 respectively.PEE1×PCH2 family was optimal family,with average individual volume 76.60%and 75.16%higher than those of CK1 and CK2 respectively,and average heterosis of individual volume was 88.14%.31 superior individuals were preliminarily selected,with average individual volume 178.30%and 176.10%higher than those of CK1 and CK2 respectively.关键词
种子园/子代测定/家系选择/早期评价/国外松Key words
seed orchard/progeny test/family selection/early evaluation/exotic pines分类
林学引用本文复制引用
周怀勋,张明慧,银彬吾,张日华,卢开成,李子成,陈虎,杨章旗..桂西南国外松优良家系早期选择[J].广西林业科学,2025,54(4):400-409,10.基金项目
"十四五"国家重点研发计划项目(2024YFD2201301-1) （2024YFD2201301-1）
广西科技基地和人才专项(桂科AD19254004) （桂科AD19254004）
八桂学者专项(2019A26) （2019A26）
广西科技重大专项(桂AA17204087-1,桂AA17204087-4) （桂AA17204087-1,桂AA17204087-4）
