文献类型：期刊文献

中文题名：桉树无性系生长性状基因型与环境互作效应及优良无性系选择

英文题名：Genotype × environment interaction on growth traits of Eucalyptus clones and selection of elite clones

作者：王楚彪[1] 熊涛[2] 张磊[2] 何文亮[1] 卢万鸿[1] 林彦[1] 罗建中[1]

第一作者：王楚彪

机构：[1]中国林业科学研究院速生树木研究所,广东湛江524022;[2]广西国有东门林场,广西扶绥532199

年份：2023

卷号：40

期号：5

起止页码：951-960

中文期刊名：浙江农林大学学报

外文期刊名：Journal of Zhejiang A&F University

收录：CSTPCD;;北大核心:【北大核心2020】；CSCD:【CSCD2023_2024】；

基金：中国林业科学研究院基本科研业务费专项资助(CAFYBB2021MB002);广东省林业科技创新项目(2017KJCX031,2019KJCX014)。

语种：中文

中文关键词：桉树无性系;BLUP-GGE联合分析;重复力;基因型与环境互作

外文关键词：Eucalyptus clone;BLUP-GGE analysis;repeatability;genotype×environment interaction

分类号：S722

摘要：【目的】对20个桉树Eucalyptus无性系,包括1个赤桉E.camaldulensis无性系和19个杂交桉无性系,分别在广西南宁、广西钦州、广东雷州、广西扶绥和海南定安的立地条件下进行测试,探讨基因型、环境及其互作对无性系选育的影响,旨在为桉树的无性系筛选适生环境并推广提供借鉴。【方法】以各地点所测试的4.5年生桉树无性系为研究对象,基于各无性系的树高、胸径、单株材积、保存率的调查数据,比较各地点各无性系的生长表现。对单地点、多地点建立线性混合模型,计算各性状的方差分量和无性系重复力,同时计算单地点的最佳线性无偏预测(BLUP)值和多地点各性状的方差效应量。最后通过材积平均值和BLUP值进行基因型和基因型与环境互作双标图(GGE)分析。【结果】单地点分析中,各地点的最优无性系生长排序不同,无性系各性状受到环境的影响也不同。多地点分析中,桉树无性系基因型、环境以及基因型与环境互作存在显著差异,各性状的无性系重复力为0.7816~0.8685,其中胸径的无性系重复力最高且表现最稳定,树高易受环境影响。基于单株材积性状,筛选出EC186、EC188、EC184为优良无性系。基于材积平均值和BLUP值进行GGE模型分析得出EC183和EC184为高材积、高稳定性的无性系。【结论】20个无性系中,EC183和EC184为高材积、高稳定性的无性系。5个地点相比,广西南宁地区适合这批无性系的快速生长,广西钦州为这批无性系理想的选材环境。
[Objective]20 Eucalyptus clones,including 1 Eucalyptus camaldulensis and 19 Eucalyptus hybrid clones,are tested at Nanning,Qinzhou,Fusui in Guangxi,Leizhou in Guangdong and Dingan in Hainan,respectively.And,the influence of genotype and environment interaction on Eucalyptus clones were mainly discussed.The results can provide a basement for screening suitable environment to the tested clones and reference for the promotion of excellent clones of Eucalyptus.[Method]The 4.5-year-old Eucalyptus clones tested at different sites were selected as the research objects.Based on the survey data of tree height,diameter at breast height(DBH),individual volume and survival rate of each clone,the growth performance of each clone at different sites was compared.A linear mixing model was established for single site and multi-site to calculate the variance components and clonal repeatability of each trait.The best linear unbiased predictive(BLUP)value of single site and the variance effect size of each trait at multi-site were also calculated.Finally,the average volume and BLUP values were used for genotype main effects(G)and genotype×environment interaction(G×E)analysis model(GGE).[Result]In single site analysis,the order of optimal clones in each site were different,and the traits in different sites were also affected by different environments.In the multi-site analysis,there were significant differences in genotype,environment and G×E interaction among Eucalyptus clones.The clone repeatability of each trait ranged from 0.7816 to 0.8685,among which the DBH trait had the highest and most stable repeatability,the tree height trait was most easily affected by environment.Based on the individual volume trait,EC186,EC188 and EC184 were selected as superior clones.Based on the average volume and BLUP value,the GGE model analysis showed that EC183 and EC184 were clones with high volume and high stability.[Conclusion]Among the 20 clones,EC183 and EC184 are clone with high individual volume and high stability.Compared with the five regions,Nanning in Guangxi is suitable for the rapid growth of these clones,Qinzhou in Guangxi is the ideal environment for the material selection of these clones.