福建柏种子园子代测定及优良家系选择  

Progeny test and families selection of seed orchard in Fokienia hodginsii

作　　者：张运根 ZHANG Yungen(Sanming state owned Forest Farm workstation,Sanming 365000,Fujian,China)

机构地区：[1]三明市国有林场工作站,福建三明365000

出　　处：《福建林业》2022年第6期33-36,共4页Fujian Forestry

基　　金：福建省属公益类科研院所基本科研专项(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：为了筛选出福建柏优良家系,2020年在福建省沙县官庄国有林场开展福建柏第1代种子园自由授粉的家系子代测定、评价与选择试验(34个参试家系,以母树林混合种为对照),并按10%入选率筛选出速生优良家系。结果表明:11年生福建柏种子园良种子代的平均树高、胸径和单株材积分别为7.85 m、9.39 cm和0.0320 m~3,分别比母树林良种高5.19%、4.34%和15.60%;树高、胸径和单株材积的狭义遗传力随林龄波动,4a林龄以后维持在0.1073~0.1905间,11a林龄时分别为0.1767、0.1460和0.1542;筛选出的3个速生优良家系,11年生时平均单株材积0.04063 m3,遗传增益4.16%,较母树林良种提高46.69%。In order to select superior families of Fokienia hodginsii, open-pollinated progeny determination, evaluation and selection test of 34families(seed stand as control check) from 1stgeneration seed orchard of F. hodginsii were studied on Guanzhuang National Forest Farm of Shaxian in 2020, and 10% families considered as superior families were selected. The results showed that the average tree height, DBH and individual volume of 1stgeneration improved seed was 7.85m, 9.39cm and 0.0320m~3 respectively in 11thyear,getting 5.19%, 4.34% and 15.60% larger than those of improved seed from seed stand. Furthermore, the narrow-sense heritability of tree height, DBH and volume fluctuated with the stand age and maintained at 0.1073 ~ 0.1905 after 4 years old, then reached at 0.1767, 0.1460 and 0.1542 respectively at 11 years old. The average individual volume of the 3 selected superior families was 0.04063 m~3 in 11a stage, obtaining 4.16 % genectic gain and 46.69% increase compared with seed stand.

关 键 词：福建柏 种子园 自由授粉子代 遗传力 家系选择 

分 类 号：S722.3[农业科学—林木遗传育种]