杂种落叶松家系生长性状变异分析与优良家系选择  

Variation Analysis of Growth Traits and Superior Families Selection of Hybrid Larix gmelini Families

作　　者：李祺 贾庆彬 杨伟财 张含国[3] Li Qi;Jia Qingbin;Yang Weicai;Zhang Hanguo(Qingshan National Forestry Improved Breeding Base,Mutankiang Heilongjiang 157000,China;Jilin Provincial Academy of Forestry Science,Changchun Jilin 130033,China;State Key Laboratory of Forest Genetics and Tree Breeding,Northeast Forestry Lniversity,Harbin Heilongjiang 150040,China)

机构地区：[1]林口县青山国家落叶松良种基地,黑龙江牡丹江157000 [2]吉林省林业科学研究院,吉林长春130033 [3]东北林业大学林木遗传育种国家重点实验室,黑龙江哈尔滨150040

出　　处：《西南林业大学学报（自然科学）》2018年第2期37-42,共6页Journal of Southwest Forestry University：Natural Sciences

基　　金："十二五"国家科技支撑项目(2012BAD01B0102)资助;国家林业局推广项目[2017]06号资助

摘　　要：以黑龙江林口县青山林场12年生杂种落叶松家系试验林为研究对象,利用树高、胸径、材积等指标,采用方差分析法对家系间生长性状差异性进行比较,利用最佳线性无偏估计(BLUP)法对各家系材积性状育种值进行估算,对各参试家系生长性状进行遗传变异分析,筛选出生长表现较好家系。结果表明:杂种落叶松家系生长性状存在较丰富的变异,家系树高、胸径平均变异系数分别为21.23%和28.40%,材积变异系数最大,为58.87%;各家系间生长性状差异显著,家系间胸径与材积差异达到极显著水平,其中日12×兴9、日5×兴9、兴5×兴9、兴6×和6家系在材积方面表现较好;结合材积性状各家系育种值估算结果,筛选出日12×兴9、日5×兴9、兴5×兴9这3个家系作为杂种落叶松优良家系;生长性状间均为正相关关系,冠幅与树高相关性未达到显著水平,但与胸径、材积存在极显著正相关关系,说明冠幅对杂种落叶松的径生长具有积极的促进作用,对高生长的影响弱于径生长。Taking the 12-year-old hybrid Larix gmelini test plantation as research object,the survey data of height,DBH,volume and crown breadth were used to analyze variation in growth traits of hybrid Larix gmelini fam-ilies,compared the differences among families by ANOVA,and estimated the breeding value of volume by BLUP method,synthesized the analysis results to select superior families.The results showed that there were abundant vari-ations in growth traits,the mean variation coefficient of families about height and DBH were 21.23%and 28.40%,the coefficient of variation about volume was 58.87%.Differences in growth traits among different families were signif-icant and The difference in DBH and volume among pedigrees reached extremely significant level.The Larix kaempferi 12 x Larix gmelinii 9,Larix kaempferi 5 x Larix gmelinii 9,Larix gmelinii 5 x Larix gmelinii 9 and Larix gmelinii 6 x Larix kaempferi 6 had good performance on volume.Synthesized the results of breeding value,finally selected the Lar-ix kaempferi 12 x Larix gmelinii 9,Larix kaempferi 5 x Larix gmelinii 9,Larix gmelinii 5 x Larix gmelinii 9 as superi-or families.There was a positive correlation between crown height and tree height,but there was a significant positive correlation with crown diameter and volume,which indicated that crown width had a positive effect on diameter growth ol hybrid larch.The effect ol high growth was weaker than the growth ol the diameter.

关 键 词：杂种落叶松 生长性状 遗传变异 育种值 家系选择 

分 类 号：S791.22[农业科学—林木遗传育种]