福建柏优树子代生长性状遗传变异及选择  

Growth Genetic Variation and Selection of Plus Tree Progeny in Fokienia hodginsii

作　　者：章进峰 ZHANG Jinfeng(Yong′an State-owned Forest Farm,Yong′an 366000,Fujian,China)

机构地区：[1]福建省永安国有林场,福建永安366000

出　　处：《福建林业科技》2023年第4期1-5,27,共6页Journal of Fujian Forestry Science and Technology

基　　金：福建省属公益类科研院所基本科研专项(福建柏第1代核心育种群体构建研究,2021R1010004);福建省林业科学研究项目(福建柏速生优质新品种选育技术与应用,闽林科[2013]6号)。

摘　　要：在福建省永安国有林场福建柏优树子代试验林8、11、16、20 a林龄时分别进行每木调查,分析福建柏优树生长性状遗传变异规律并筛选优树家系和优良单株。结果表明:随着林龄增加,树高、胸径及材积的遗传变异系数和遗传力均随着林龄的增长呈现出下降的趋势。林龄20 a时,试验林平均树高、胸径、单株立木材积分别为10.65 m、16.75 cm、0.12236 m^(3),变异系数分别为2.07%、3.60%、8.79%,广义遗传力分别为0.3109、0.3990、0.4729,狭义遗传力值分别为0.1313、0.1641、0.2245;以单株立木材积育种值为指标,筛选出8个优良家系和59株优良单株。入选优良家系平均单株立木材积达0.19952 m 3,平均育种值和遗传增益分别为0.01745 m^(3)和12.20%;入选单株平均单株立木材积达0.27709 m^(3),平均增益达20.89%。At the age of 8,11,16,and 20 years in the plus tree progeny test stand of Fokienia hodginsii on Yong′an State-owned Forest Farm in Fujian Province,each tree was surveyed to analyze the genetic variation rules of growth ofF.hodginsii plus trees and select superior families and individuals.The r esults showed that the genetic variation coefficient and heritability of tree height,DBH and volume showed a decreasing trend with the inc rease of stand age.At the age of 20 years,the average tree height,DBH,and volume of the tested forest could reach at 10.65 m,16.75 cm and 0.12236 m^(3),respectively.The coefficient of variation and h e ritability values of tree height,DBH and volume all show a downward trend with the growth of forest age.At the age of 20 years,the coefficients of variation for tree height,DBH and volume were 2.07%,3.60%and 8.79%,respectively.The broad sense heritability values were 0.3109,0.3990 and 0.4729,while th e narrow sense heritability values were 0.1313,0.1641 and 0.2245,respective ly.By calculating genetic gain and breeding values,8 excellent families and 59 excellent individuals were selected based on the performance of standard of in dividual standing timber volume.the average timber volume of the selected exce llent families reached 0.19952 m^(3),the average breeding value and genetic ga in are 0.01745 m^(3)and 12.20%,respectively;the average timber volume of selec ted individual plant reached 0.27709 m^(3),and average gain reached 20.89%.

关 键 词：福建柏 子代测定 生长性状 遗传力 选优 

分 类 号：S791.43[农业科学—林木遗传育种] S722.33[农业科学—林学]