Microsatellite DNA Variation of the Gametophyte Clones Isolated from Introduced Laminaria japonica (Phaeophyta) and L. longissima of China and Varieties Derived from them

作     者：Bing-Jun Li Yuan-Yuan Shi Guan-Pin Yang Shi Che Xiao-Jie Li Yi-Zhou Cong 

作者机构：College of Marine Life Sciences Ocean University of China Qingdao 266003 China Shandong Oriental Ocean Sci-tech Co. Ltd. Yantai 264005 China College of Oceanography Yantai University Yantai 264005 China 

出 版 物：《Journal of Integrative Plant Biology》 (植物学报（英文版）)

年 卷 期：2008年第50卷第3期

页      面：352-359页

核心收录：

学科分类：0908[农学-水产] 09[农学] 

基　　金：The Key Laboratory of Mariculture of Chinese Ministry ofEducation, Ocean University of China (200405) Provincial Departmentof Science and Technology of Shandong (2005GG3205190) 

主　　题：genetic diversity genetic differentiation Laminaria japonica Laminaria Iongissima microsatellite DNA marker 

摘      要：The variation of 90 Laminaria gametophyte clones representing the introduced Laminaria japonica （Group 1） and Laminaria Iongissima （Group 2）, the varieties of L. japonica （Group 3） and the varieties derived from interspecific hybrids （Group 4） was determined with 18 microsatellite markers. The allelic diversity and Nei＇s gene diversity of Group 1 were significantly higher than those of Group 2 （2.9 vs. 1.8 and 0.414 vs. 0.161, respectively）, demonstrating that the variation of the introduced L. japonica is richer than that of L. Iongissima. Both allelic diversity and Nei＇s gene diversity of Group 3 were lower than those of Group 1, indicating that only a portion of variation of L. japonica was incorporated into the varieties of L. japonica. Significant genetic differentiation was detected between four groups and between female （Population 1 ） and male （Population 2） gametophyte clones in each group. The variation among groups accounted for 39.95%, while that among populations accounted for 21.65% of the total. The genetic distance between Group 1 and Group 4 was obviously longer than that between Group 2 and Group 4 （0.686 vs. 0.291）, indicating that maternal gametophyte clone contributed more variation to the hybrids than the paternal gametophyte clone did.