Molecular population genetic study of Pantropical Plants with Seadrifted seeds : Influence of long distance seed dispersal to speciation

采用分子群体遗传学方法对泛热带植物海上漂流种子(PPS)进行了研究，以阐明其在整个热带沿海地区的分布范围。对PPS属植物的地理结构和系统发育关系进行了研究。结果的跨物种比较表明，1)存在共同的地理屏障，阻止了海上漂流种子通过远距离传播进行基因流动，2)物种形成模式受到种子分散性的影响。

Pantropical Plants with Sea-drifted Seeds (PPSS) were studied by means of molecular population genetics to clarify how their distribution ranges were established over littoral areas all over the tropics. Geographic structure and phylogenetic relationships were studied in some representative plants of PPSS (genus Rhizophora, Canavalia rosea, Vigna marina, for example) . Cross-species comparison of results revealed 1) the presence of common geographic barriers that prevent gene flow by long distance dispersal by sea-drifted seeds, and 2) patterns of speciation influenced by seed dispersability.