Genetic relationships among sympatric varieties of Acer mono in the Chichibu Mountains and Central Hokkaido, Japan  

作　　者：Chunping Liu Jian Cong Hailong Shen Cunxue Lin Yoko Saito Yuji Ide 

机构地区：[1]State Key Laboratory of Forest Genetics and Breeding,Northeast Forestry University,Harbin 150040,China [2]Foreign Capital Project Office,Forestry Department of Liaoning Province,Shenyang 110036,China [3]Mudanjiang Branch of Heilongjiang Academy of Agricultural Sciences,Mudianjiang 157041,China [4]Laboratory of Forest Ecosystem Studies,Department of Ecosystem Studies,Graduate School of Agriculture and Life Science,The University of Tokyo,Yayoi 1-1-1,Bunkyo-ku,Tokyo 113-8657,Japan

出　　处：《Journal of Forestry Research》2017年第4期699-704,共6页林业研究（英文版）

基　　金：supported by National Postdoctoral Daily Fund of China and Heilongjiang Postdoctoral Fund(LBHZ13007)

摘　　要：Acer mono Maxim. is one of the major components of cool temperate forests in Japan. Some of its many varieties are distributed sympatrically. Because of its great variability, the intraspecific taxonomy and nomenclature of the species are controversial. To understand the genetic relationships among these varieties and whether hybridization or introgression occurred among the sympatric varieties, we studied the genetic relationships among sympatric varieties of A. mono in the Chichibu Mountains (A. mono var. ambiguum, A. mono var. connivens, A. mono var. marmoratum) and Central Hokkaido (A. mono var. mayrii and A. mono var. glabrum) in Japan. Our results showed that varieties in Chichibu are genetically close, suggesting that hybridization or introgression might occur between these varieties, which could explain the higher genetic diversity of varieties in Chichibu than in Hokkaido. In contrast to the close relationships between the varieties in Chichibu, varieties in Hokkaido seemed relatively separated from each other; indeed, there may be reproductive isolation between the two varieties. The results provide new insight for the taxonomy of the varieties of A. mono, especially the sympatric varieties, in Japan.Acer mono Maxim. is one of the major components of cool temperate forests in Japan. Some of its many varieties are distributed sympatrically. Because of its great variability, the intraspecific taxonomy and nomenclature of the species are controversial. To understand the genetic relationships among these varieties and whether hybridization or introgression occurred among the sympatric varieties, we studied the genetic relationships among sympatric varieties of A. mono in the Chichibu Mountains (A. mono var. ambiguum, A. mono var. connivens, A. mono var. marmoratum) and Central Hokkaido (A. mono var. mayrii and A. mono var. glabrum) in Japan. Our results showed that varieties in Chichibu are genetically close, suggesting that hybridization or introgression might occur between these varieties, which could explain the higher genetic diversity of varieties in Chichibu than in Hokkaido. In contrast to the close relationships between the varieties in Chichibu, varieties in Hokkaido seemed relatively separated from each other; indeed, there may be reproductive isolation between the two varieties. The results provide new insight for the taxonomy of the varieties of A. mono, especially the sympatric varieties, in Japan.

关 键 词：Genetic differentiation HYBRIDIZATION INTROGRESSION MAPLE nSSR 

分 类 号：S792.35[农业科学—林木遗传育种]