刨花楠种源和家系子代变异及早期选择  

Research on the Variation and Early Selection of the Seed Sources and Family Progeny of Machilus pauhoi

作　　者：沈秋水 SHEN Qiushui(Huian chihu State owned Forest Farm in Fujian Province,Huian 362200,Fujian,China)

机构地区：[1]福建省惠安赤湖国有防护林场,福建惠安362200

出　　处：《福建林业科技》2024年第4期60-64,81,共6页Journal of Fujian Forestry Science and Technology

基　　金：国家自然科学基金项目(31971643);国家“十二五”农村领域科技计划课题(2012BAD01B0505);福建省高校产学合作项目(2019N5009);福建省自然科学基金面上项目(2018J01479,2018J01737)。

摘　　要：为探索刨花楠生长规律和遗传变异情况,从福建、江西和湖南等地的刨花楠天然林中根据表型选择出35株优树,在福建安溪丰田国有林场开展刨花楠种源、家系子代测定试验。结果表明:试验林2年生和4年生时树高、地径/胸径、单株立木材积在种源间和家系间均存在显著差异,家系狭义遗传力范围为0.48~0.55,4个生长性状受到中等程度遗传控制。采用聚类分析和综合权重评分法进行优良家系选择,均筛选出江西遂川种源的7、16、18、8、13、17、15号7个优良家系。早期评选出的优良家系,可在与试验区相似的地区推广试种,将试验研究结果尽快转化为生产力。To explore the growth pattern and genetic variation of Machilus Pauhoi,35 superior trees were selected from natural forests of Machilus Pauhoi in Fujian,Jiangxi,and Hunan based on their phenotypes.Seed source and family offspring testing of Machilus Pauhoi were conducted at the Fengtian State-owned Forest Farm in Anxi,Fujian.The results showed that There were significant differences in tree height,ground diameter/breast height diameter,and individual standing timber volume between the 2 and 4 year old experimental forests,with a narrow heritability range of 0.48~0.55 for each family.Four growth traits were moderately controlled by genetics.Through cluster analysis and comprehensive weight scoring method,seven excellent families,numbered 7,16,18,8,13,17 and 15,were selected from the Suichuan germplasm in Jiangxi Province.The excellent families selected in the early stage can be promoted for trial planting in areas similar to the experimental zone,and the experimental research results can be quickly converted into productivity.

关 键 词：刨花楠 种源 家系 早期选择 

分 类 号：S722.7[农业科学—林木遗传育种]