毛红椿优树子代苗期生长性状测定与选择  

Plus Trees Progeny Growth Traits Determination and Selection of Toona ciliate var.pubescens at Seedling Stage

作　　者：林智勇[1,2,3] LIN Zhiyong(Fujian Academy of Forestry Science,Fuzhou 350012,Fujian,China;Fujian Forestry Productivity Promotion Center,Fuzhou 350012,Fujian,China;Fujian Min Lin Forestry Judicial Identification Center,Fuzhou 350012,Fujian,China)

机构地区：[1]福建省林业科学研究院,福建福州350012 [2]福建省林业生产力促进中心,福建福州350012 [3]福建闽林司法鉴定中心,福建福州350012

出　　处：《福建林业科技》2023年第4期39-43,共5页Journal of Fujian Forestry Science and Technology

基　　金：福建省科技厅省属公益类科研院所基本科研专项(毛红椿种质资源收集保存与优良材料选育,2019R1009-4);福建省林业科学研究院自主选题项目(闽林研[2015]73号);南方山地用材林培育国家林业和草原局重点实验室资助。

摘　　要：于2020年,在福建省三明市沙县金德苗木有限公司苗圃对毛红椿14个家系1年生苗木的地径、苗高、主根长、根生物量、茎生物量、叶生物量和全株生物量等生长性状进行测定,分析其苗期生长性状遗传变异规律,并初步筛选优良家系。结果表明,参试的14个家系间的各生长性状均存在极显著差异,其中12号、7号家系的生长性状表现较好,其地径、苗高、主根长、根生物量、茎生物量、叶生物量、全株生物量分别比群体均值提高19.84%~28.54%、24.38%~36.32%、23.95%~35.56%、23.03%~33.82%、23.86%~35.42%、25.93%~38.52%、23.65%~34.99%。毛红椿家系各性状存在较大的遗传变异,其中叶生物量、苗高遗传变异系数最大,分别达25.38%、22.80%,苗高和叶生物量指标可作为早期选择的一个重要依据。经苗期多性状指标综合评价,初步筛选出毛红椿优良家系:7号、12号、3号、8号,其苗期生长较好、根系发达。研究结果可为毛红椿的良种选育与应用提供参考。The genetic variation of seedling traits was analyzed,and the exce llent families were primarily selected based on the comparative analysis of DBH,seedling height,main root length,root biomass,stem biomass,leaf biomass,a nd whole plant biomass of one-year-old seedlings in 14 families of Too na cilia te var.pubescens,to provide the basis for the breeding and application.The re sults showed that there were very significant differences in growth traits among 14 families.The growth traits of 12 and 7 families performed well,whose grou nd diameter,seedling height,main root length,root biomass,stem biomass,leaf biomass,and whole plant biomass increased by 19.84%to 28.54%,24.38%to 36.32%,23.95%to 35.56%,23.03%to 33.82%,23.86%to 35.42%,25.93%to 38.52%and 23.65%to 34.99%,respectively,compared to the average.There was significant variation in every trait of T.ciliate var.pubescens family.The coefficient of variation of leaf biomass and seedling height reached 25.38%a nd 22.80%,respectively,indicating that the seedling height growth and leaf bi omass indexes of 14 families can be used as an important evidence for early sele ction.Comprehensive evaluation of multi-trait indexes at seedling stage,the s uperior families as follows:the families 7,12,3 and 8,which seedlings grew well and the root system was developed.The research results can provide refer ence for the breeding and application of improved varieties of T.ciliat e var.pubescens.

关 键 词：毛红椿 苗期测定 生长性状 家系选择 

分 类 号：S722.5[农业科学—林木遗传育种] S792.32[农业科学—林学]