西南林业大学学报2018，Vol.38Issue(2)：37-42,6.DOI:10.11929/j.issn.2095-1914.2018.02.006
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
摘要
Abstract
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 ×Larix gmelinii 9,Larix kaempferi 5×Larix gmelinii 9,Larix gmelinii 5×Larix gmelinii 9 and Larix gmelinii 6× Larix kaempferi 6 had good performance on volume.Synthesized the results of breeding value,finally selected the Lar-ix kaempferi 12×Larix gmelinii 9,Larix kaempferi 5×Larix gmelinii 9,Larix gmelinii 5×Larix gmelinii 9 as superi-or families. There was a positive correlation between crown height and tree height,but there was a significant posi-tive correlation with crown diameter and volume,which indicated that crown width had a positive effect on diameter growth of hybrid larch. The effect of high growth was weaker than the growth of 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Key words
hybrid larch/growth traits/genetic variation/breeding value/superior families selection分类
农业科技引用本文复制引用
李祺,贾庆彬,杨伟财,张含国..杂种落叶松家系生长性状变异分析与优良家系选择[J].西南林业大学学报,2018,38(2):37-42,6.基金项目
"十二五"国家科技支撑项目(2012BAD01B0102)资助 （2012BAD01B0102）
国家林业局推广项目 [2017] 06号资助. （）
