文献类型：期刊文献

中文题名：黑木相思无性系多性状综合评价及选择

英文题名：Multi-Trait Evaluation and Comprehensive Selection of Acacia melanoxylon Clones in Different Periods

作者：申琳琳[1] 胡冰[1] 裘珍飞[1] 范春节[1] 陈考科[2] 曾炳山[1]

第一作者：申琳琳

机构：[1]中国林业科学研究院热带林业研究所,热带林业研究国家林业和草原局重点实验室,广东广州510520;[2]广东万绿湖农业投资有限公司,广东河源517583

年份：2024

卷号：37

期号：6

起止页码：73-85

中文期刊名：林业科学研究

外文期刊名：Forest Research

收录：CSTPCD;;Scopus;北大核心:【北大核心2023】；CSCD:【CSCD2023_2024】；

基金：国家重点研发计划子课题(2022YFD2200205-1)国家级。

语种：中文

中文关键词：无性系选育;优良无性系;黑木相思;综合评价;遗传参数

外文关键词：clonal breeding;excellent asexual;Acacia melanoxylon;comprehensive assessment;genetic parameter

分类号：S722

摘要：[目的]综合分析和评价不同林龄阶段黑木相思无性系多个性状差异,揭示其群体表型变异水平,筛选和评价优良无性系,为优树种质资源的保存、利用和目标性状定向培育提供科学依据。[方法]测定20个黑木相思无性系生长性状、干形、抗风性和抗病性等8个指标,采用方差分析、遗传参数估算、差异性比较和布雷金多性状综合评定等方法对黑木相思无性系群体进行比较分析和综合选择。[结果]黑木相思各无性系间的树高、胸径和材积在2.5、4.5、6.5年生时均存在显著差异。不同林龄阶段SR18、SR17、SR20、和SR14-1无性系树高、胸径和材积生长均最佳;SR14和SR14-1高径比表现最优,SR25树干分枝较少,干形最优;黑木相思整体抗风性较强,SR45在3个林龄时期抗风性最低;黑木相思无性系SR3、SR25、SR26、SR31、SR41、SR45抗病性较强;SR18、SR17、SR14、SR14-1和SR25综合Q_(i)值较高。[结论]不同黑木相思无性系间变异较大,本次试验的20个黑木相思无性系中SR18、SR17、SR14、SR14-1和SR25可作为生长性状、干形、抗风性、抗病性最优良的无性系,这对黑木相思良种选育具有重要意义,并能够为其人工林高质量发展和建设提供理论基础和科学依据。
[Objective]To comprehensively analyze and evaluate the differences in multiple traits of Acacia melanoxylon clones at different forest age stages and reveal the level of population phenotypic variation,screen and evaluate excellent clones,and provide scientific basis for the preservation,utilization and directional cultivation of target traits of superior tree species.[Methods]Eight indicators,including growth traits,stem shape,wind resistance and pest resistance of 20 Acacia melanoxylon clones were measured.The clonal populations of A.melanoxylon were compared and comprehensively selected by means of variance analysis,genetic parameter estimation,difference comparison,and comprehensive evaluation of Brekking's multi-traits.[Result]There were significant differences in tree height,diameter at breast height,and volume among A.melanoxylon clones at 2.5 a,4.5 a,and 6.5 a.Clones SR18,SR17,SR20,and SR14-1 showed the best growth in tree height,DBH,and timber volume across different age stages..SR14 and SR14-1 had the best height-to-diameter ratio,and SR25 had the best stem shape with fewer branches.The overall wind resistance of A.melanoxylon is strong,and SR45 had the lowest wind resistance in the three forest ages.A.melanoxylon clones SR3,SR25,SR26,SR31,SR41,SR45 had strong disease resistance,while SR18,SR17,SR14,SR14-1,and SR25 had higher comprehensive Q_(i)values.[Conclusion]There is considerable variation among the Acacia melanoxylon clones.Clones SR18,SR17,SR14,SR14-1,and SR25,selected from the 20 clones in this experiment,demonstrate the best growth traits,stem form,wind resistance,and disease resistance.These findings are significant for the breeding of superior Acacia melanoxylon varieties and provide a theoretical foundation and scientific basis for the highquality development and establishment of its plantations.