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Family selection and evaluation of larix gmelinii ***-rupprechtii(Mayr.)Pilger based on stem analysis data at multiple sites

引用

Journal of Forestry Research 2023年第5期34卷 1627-1638页

作者： Conghui Zheng Jianfeng Dai Hongjing Zhang Yuzhong Wang Zhenhua Xu Zichun Du Hebei Technical Innovation Center for Forest Improved variety Hebei Academy of Forestry and Grassland SciencesShijiazhuang 050061People’s Republic of China

larix gmelinii ***-rupprechtii(Mayr.)Pilger is an important native tree species in North China with advantages of fast growth,straight trunk,and good wood *** multi-year and multi-site breeding research of families of the species has not been reported *** on diameter at breast height(DBH),height and volume of 25 families on four experimental sites,we calculated variance components,genetic parameters,juvenile and mature trait correlations and made genotype main effect plus genotype×environment interaction effect(GGE)biplot based on the breeding values estimated using the method of best linear unbiased prediction(BLUP).Compared with height,DBH and volume had higher heritability and larger variation coefficients,making them the more suitable traits for family selection and *** on these,GGE biplots containing 20 combinations of site×age were drawn using data at 13 to 17 years when the interactions between family and location were *** sites classifications based on DBH,and volume were inconsistent,with two categories for DBH and one for *** Guyuan site was the most suitable with strong discriminating ability,high representativeness and stability among tree *** the ranking results of DBH and volume,families 66,76,82 and 111 were high-yielding and stable,families 78 and96 were high-yielding with above average stability,families72 and 79 were high-yielding with below average stability,whereas stability of family 100 was inconsistent between DBH and *** selection based on DBH was convenient and reliable,and can be made at seven *** study provides support for the selection of larix gmelinii ***-rupprechtii families in Hebei province and an example for the application of stem analysis data from multiple sites in tree breeding.

关键词： larix gmelinii var principis-rupprechtii Stem analysis Multi-site Early selection Genotype main effect plus Genotype-environmental interaction effect(GGE)biplot

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