Performance and genetic diversity of 23 provenances of northern red oak(Quercus rubra L.)after 25 years of growth in South Korea  

作　　者：Ki-Won Kim Kyoung-Mi Lee Soon-Ho Kwon Ji-Min Park Yang-Gil Kim Hye-In Kang Da-Bin Yum Kyu-Suk Kang 

机构地区：[1]Department of Agriculture,Forestry and Bioresources,Seoul National University,Seoul 08826,Republic of Korea [2]Department of Forest Bioresources,National Institute of Forest Science,Suwon 16631,Republic of Korea [3]Department of Plant Resource Research,Korea National Arboretum,Pocheon 11186,Republic of Korea [4]Research Institute of Agriculture and Life Sciences,CALS_SNU,Seoul 08826,Republic of Korea

出　　处：《Journal of Forestry Research》2021年第5期2181-2188,共8页林业研究（英文版）

基　　金：supported by a research project(No.FTIS 2014109B0-1820-AA01)of Korea Forest Service and the Seoul National University Carbon Sink Graduate Program provided by Korea Forest Service&Korea Forestry Promotion Institute。

摘　　要：Growth traits and genetic diversity of 23 provenances of Quercus rubra introduced from North America were analyzed in a provenance trial established with a randomized block design in Hwaseong,Gyeonggi,South Korea in 1993.Growth variables and survival at age 25 were compared with results from early stages.Height,DBH,volume and stem straightness of Q.rubra was better than those of the domestic oak(Quercus accutissima).Growth of the Dunham Island provenance from New York was the best among the 23 provenances that of the Eagle River provenance from Wisconsin was poorest.Survival rate at age25 was on average 52%.The longitude of seed origin and growth of provenance were consistently significantly negatively correlated at all ages.Growth of coastal provenances was superior to that of the inland provenances,which were separated by the Appalachian Mountains.Genetic diversity and genetic distance among the provenances were evaluated using micro satellite markers.The allelic frequencies showed high polymorphism in 10 microsatellite loci,and 292 alleles were found.Of 10 loci,two were commonly found in the 23 provenances.The mean allelic diversity and heterozygosity observed among the provenances were similar to those from the native populations of Q.rubra in North America.Nei’s genetic distance among the 23 was estimated and showed that a clear trend between geographic and genetic distances,indicating that some provenances have high genetic diversity with superior growth performance.

关 键 词：Introduction breeding Provenance test ADAPTATION Microsatellite marker Genetic distance 

分 类 号：S792.99[农业科学—林木遗传育种]