文献类型：期刊文献

中文题名：柏木生长性状的家系-环境互作效应及其关键影响因子

英文题名：Family-Environment Interaction and Key Influencing Factors of Growth Traits of Cupressus funebris

作者：赵浩博[1,2] 丰忠平[3] 郑成忠[4] 邱勇斌[4] 安林辉[5] 金国庆[2] 张振[2]

第一作者：赵浩博

机构：[1]东北林业大学林木遗传育种全国重点实验室,哈尔滨150040;[2]中国林科院亚热带林业研究所、浙江省林木遗传育种重点实验室,杭州311400;[3]浙江省淳安县林业总场有限公司姥山分场,淳安311700;[4]浙江省开化县林场,开化324300;[5]湖北省太子山林场管理局,京山431822

年份：2025

卷号：61

期号：6

起止页码：120-129

中文期刊名：林业科学

外文期刊名：Scientia Silvae Sinicae

收录：;北大核心:【北大核心2023】；

基金：“十四五”国家重点研发子课题(2023YFD2200601-4);浙江省“十四五”林木新品种选育课题(2021C02070-8)。

语种：中文

中文关键词：柏木;家系;遗传变异;家系×环境效应;遗传选择

外文关键词：Cupressus funebris;family;genetic variation;family×environment interactions;genetic selection

分类号：S791.41

摘要：【目的】揭示柏木优树自由授粉家系生长性状的遗传变异规律,评估家系、环境及其互作效应的幅度和模式。【方法】以营建在浙江省开化(Kaihua,KH)县林场、淳安县十八坞(Shibaowu,SBW)林场和湖北省京山县太子山(Taizishan,TZS)林场3种立地环境的8年生柏木优树自由授粉家系为研究对象,分析其生长性状的遗传变异规律,估算其育种值、遗传力等参数,筛选速生和稳定性强的家系,并探讨试验点主要环境因子对柏木生长的影响。【结果】柏木家系生长性状(树高、胸径、单株材积、冠幅)的遗传变异系数为11.64%~21.20%,其中单株材积的变异最大。生长性状在地点间、家系间差异显著,TZS试点单株材积分别高于KH试点和SBW试点124.64%和171.93%,KH、SBW和TZS试点的家系遗传力变幅分别为0.30~0.73、0.22~0.51和0.75~0.87;采用独立淘汰法,以胸径和树高育种值的前20%为标准,在KH试点、SBW试点和TZS试点分别选出2个、1个和3个优良家系,单株材积的遗传增益为25.87%~59.00%;以3%为入选率,在KH、SBW和TZS试点分别选出7、7和6个优良单株,单株材积的增益为181.98%~355.53%。多地点联合方差分析和遗传参数表明,家系生长性状与环境互作(G×E)效应显著,B型遗传相关系数变幅为0.05~0.71,基于胸径和树高BLUP-GGE双标图分析,综合选出3号、7号和12号为速生和稳定性强的家系,单株材积平均增益为27.74%。试验点间的日照时间、降雨量、土壤交换钙含量、土壤有机质含量、土壤速效氮含量、土壤酸性有效磷含量可能是影响柏木生长的关键环境因子。【结论】柏木生长性状家系间存在丰富的变异,具有较大的遗传改良潜力,其受家系遗传效应、环境效应以及G×E效应共同影响,综合选出的速生和稳定家系,可为柏木跨地点品种的推广提供材料基础。
【Objective】This study aims to reveal the genetic variation patterns of growth traits in open-pollinated families of Cupressus funebris(cypress),and assess the magnitude and mode of family and environment effects,and their interaction.【Method】This study targeted the 8-year-old open-pollinated families of cypress established in three different environmental conditions in Kaihua(KH)forest station in Kaihua County,Shibawu(SBW)forest station in Chun’an County of Zhejiang Province,and Taizishan(TZS)forest station in Jingshan County of Hubei Province.The genetic variation patterns of growth traits were analyzed,and the parameters such as breeding values and heritability were estimated,and hereby to screen for families with rapid growth and strong stability,and to explore the impact of the main environmental factors at the experimental sites on the growth of cypress.【Result】The genetic variation coefficients of growth traits(tree height,diameter at breast height,individual tree volume,and crown width)of cypress families ranged from 11.64%to 21.20%,with the greatest variation in individual tree volume.There were significant differences in the growth traits among sites,and among families,and the volume per plant of TZS was 124.64%and 171.93%higher than that of KH and SBW,respectively.The variation ranges of family heritability of KH,SBW and TZS were 0.30-0.73,0.22-0.51 and 0.75-0.87,respectively.The independent culling method was used to select 2,1,and 3 superior families respectively in the KH,SBW and TZS sites,with the top 20%of breeding values for diameter at breast height(DBH)and tree height as the criterion,and the genetic gains in individual tree volume ranged from 25.87%to 59.00%.The 7,7,and 6 elite individual trees were selected from the KH,SBW,and TZS sites,respectively,based on a selection rate of 3%on phenotypic values for DBH and tree height,and the gains in individual tree volume ranged from 181.98%to 355.53%.Multivariate variance analysis and genetic parameters across multiple sites indicated that there was a significant family by environment(G×E)interaction effect on family growth traits.The variation range of B-type genetic correlation coefficients was from 0.05 to 0.71.Based on the BLUP-GGE biplot analysis of DBH and tree height,family 3,7,and 12 were comprehensively selected as fastgrowing and stable families,with an average individual tree volume gain of 27.74%.Key environmental factors such as sunlight duration,rainfall,soil exchangeable calcium content,soil organic matter content,soil available nitrogen,and soil acid-available phosphorus content at the experimental sites might be the critical factors affecting the growth of cypress.【Conclusion】There is abundant variation in growth traits among cypress families,indicating that they are significant potential for genetic improvement.These traits are influenced by family genetics,environment,and G×E(genotype×environment)interaction.The comprehensive selection of fast-growing and stable families can provide a material basis for the promotion of cypress varieties across different locations.