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Study on the variation in and selection of Fraxinus mandshurica provenances and families in northeast China

Journal of Forestry Research 2023年第2期34卷 519-529页

作者： Junfei Hao Na Chen Pingyu Yan Kaiyuan Xu Lei Zhang Hanguo Zhang State Key Laboratory of Tree Genetics and Breeding Northeast Forestry UniversityHarbin 150040People’s Republic of China

Fraxinus mandshurica *** one of the main afforestation species in northeast China,and there is great demand for improved *** *** results of an investigation into and analysis of the growth traits of *** provenances and families showed that there were significant differences in different ***,variations in growth traits decreased year by *** was a significant negative correlation between tree heights of the provenances and sunshine hours in their areas of *** provenances of Xinglong,Hailin and Wuchang were selected based on the volume of 18-year-old *** average genetic gain from the selection of fast-growing provenances was 19.4%.Ten superior fast-growing families were *** average volume of the selected families was22.6%,higher than that of all *** correlation coefficient between heights at 6-year-old and at 18a was 0.838for provenances,and between heights at 4-year-old and at 18-year-old was 0.303 for *** results indicate that early selection for height in provenances or families could be performed at 6 years or 4 years,*** selection for DBH and volume in families could start at 8 years.

关键词： Fraxinus mandshurica Provenance Family selection early-late correlation

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