长白落叶松种子园亲本无性系生长性状变异研究  

Variation Analysis of Growth Traits of Larix olgensis Parental Clones in Seed Orchards

作　　者：张丹丹[1] 李翔[1] 王璧莹 王喜和 孙权 吴蕴洋 李平扬 李德尧 李玉磊 赵曦阳[1] Zhang Dandan;Li Xiang;Wang Biying;Wang Xihe;Sun Quan;Wu Yunyang;Li Pingyang;Li Deyao;Li Yulei;Zhao Xiyang(State Key Laboratory of Tree Genetics and Breeding,School of Forestry,Northeast Forestry University,Harbin 150040;Qinhe Seed orchards,Nation Improved Variety Base of Wangqing Forestry Branch Office,Wangqing 133219)

机构地区：[1]东北林业大学林木遗传育种国家重点实验室,哈尔滨150040 [2]汪清林业分公司亲和种子园国家良种基地,汪清133219

出　　处：《植物研究》2022年第1期130-137,共8页Bulletin of Botanical Research

基　　金：国家重点研发计划项目(2017YFD0600402)。

摘　　要：东北地区多个长白落叶松(Larix olgensis)种子园已经营建多年,但亲本生长情况往往被忽视。本研究以汪清林业局49个长白落叶松亲本无性系为材料,对其多个生长性状进行测定与遗传变异分析,方差分析结果表明49个无性系间的各测定性状差异均达极显著水平,各测定性状表型变异系数和遗传变异系数变化范围分别为7.71%~31.93%和2.05%~12.55%,重复力变化范围为0.44~0.76,高重复力、高变异系数有利于无性系的评价选择;树高、胸径等大部分生长性状的相关性达极显著水平,表明各生长性状在生长发育中相互影响;主成分分析结果表明第一主成分贡献率为61.44%,主要代表生物量性状;依托主成分分析结果对长白落叶松亲本无性系进行综合评价,初步筛选L76、L5、L7、L12和L4等5个优良无性系,这些无性系树高等性状遗传增益变化范围为3.55%~15.50%,入选无性系可以为长白落叶松良种选育提供材料。The growth of parental clones was neglected in seed orchards though many Larix olgensis seed orchards had been built for several years in Northeast China.In this research,49 L.olgensis parental clones were used as materials,many growth traits were investigated and analyzed respectively.ANOVA results showed that there was significant difference among 49 clones in each growth traits.The phenotypic variation and genetic variation coefficients of different traits ranged from 7.71%-31.93%and 2.05%-12.55%,respectively.The repeatability of different traits ranged from 0.44-0.76,high repeatability and variation coefficients were beneficial for selection of elite clones.The correlation of most growth traits including tree height was extremely significant showed that each growth traits affected each other.The results of principal component analysis showed that the contribution rate of the first principal component was 61.44%,which mainly represented biomass traits.Comprehensive evaluation of L.olgensis parental clones were conducted based on the results of principal component analysis,clone L76,L5,L7,L12 and L4 were selected as elite clones,the genetic gain of different growth traits ranged from 3.55%-15.50%,the selected clones could provide materials for tree breeding of L.olgensis.

关 键 词：长白落叶松 亲本无性系 变异系数 重复力 选择 

分 类 号：S791.229[农业科学—林木遗传育种]