This study aimed to explore and improve the different economic values of Pinus koraiensis (Siebold and Zucc.) by examining the variations in 6 growth traits and 9 physicochemical wood properties among 53 P. koraiensis half-sib families. Growth traits assessed included height, diameter at breast height, volume, degree of stem straight-ness, stem form, and branch number per node, while wood properties assessed included density, fiber length and width, fiber length to width ratio, and cellulose, hemicel-lulose, holocellulose, lignin, and ash contents. Except for degree of stem straightness and branch number per node, all other traits exhibited highly significant variations ( P < 0.01) among families. The coefficients of variation ranged from 5.3 (stem form) to 66.7％ (ash content), whereas, the herit-ability ranged from 0.136 (degree of stem straightness) to 0.962 (ash content). Significant correlations were observed among growth traits and wood physicochemical properties. Principal component analysis identified four distinct groups representing growth traits, wood chemical and physical properties, and stem form traits. Multi-trait comprehensive evaluation identified three groups of elite families based on breeding objectives, including rapid growth, improved timber production for building and furniture materials, and pulpwood production. These specific families should be used to establish new plantations.

College of Forestry and Grassland,Jilin Agricultural University,Changchun 130118,People's Republic of China;State Key Laboratory of Tree Genetics and Breeding,Northeast Forestry University,Harbin 150040,People's Republic of China;Sanchazi Forestry Bureau of Jilin Province,Baishan 134702,People's R epublic of China;Southern Swedish Forest Research Centre,Swedish University of Agricultural Sciences,PO Box 49,230 53 Alnarp,Sweden

[1]Qinhui Zhang;Xiaona Pei;Xianbo Lu;Chunli Zhao;Guangzhi Dong;Wanling Shi;Liankui Wang;Yanlong Li;Xiyang Zhao;Mulualem Tigabu-.Variations in growth traits and wood physicochemical properties among Pinus koraiensis families in Northeast China)[J].林业研究（英文版）,2022(05):1637-1648

hemicel,holocellulose,straightness,herit,pulpwood

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