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首页> 外文期刊>Journal of Experimental Marine Biology and Ecology >Mating system and population genetic structure of Bruguiera gymnorrhiza (Rhizophoraceae), a viviparous mangrove species in China
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Mating system and population genetic structure of Bruguiera gymnorrhiza (Rhizophoraceae), a viviparous mangrove species in China

机译：中国胎生红树林种布鲁氏菌的交配系统和种群遗传结构

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摘要

In order to explain the diversity patterns and develop the conservation strategies, the population genetic structures and the mating systems of Bruguiera gymnorrhiza from the coastlines of south China were investigated in this study. The mating system parameters were analyzed using progeny arrays for allozyme markers. The multilocus outcrossing rates (tm) ranged from 0.845 (Fugong) to 0.267 (Dongzhai harbor). High allozyme variations within the five collected populations were determined and compared with the published data of other plant species with the mixed mating systems. At species level, the percentage of polymorphic loci (P) was 80%, the average number of alleles per locus (A) was 2.440, and the heterozygosity (He) was 0.293. The total gene diversity within each population (H_S=0.2782) and the coefficient of genetic differentiation (G_(ST)=0.0579) among the populations were estimated. On the basis of this population genetic structure, it is suggested that the gene flow (Nm=3.85) is quite high, which is possibly related to its water-dispersed hypocotyls. It is also suggested that the mating system of this species is of mixed mating.
机译：为了解释物种多样性模式并制定保护策略，本研究对华南沿海裸露藻的种群遗传结构和交配系统进行了研究。使用后代阵列分析了交配系统参数，以得到同工酶标记。多基因异交率（tm）介于0.845（福宫）至0.267（董寨港）之间。确定了五个采集种群中的高同工酶变异，并将其与混合交配系统的其他植物物种的已公布数据进行比较。在物种水平上，多态性位点（P）的百分比为80％，每个基因座的平均等位基因数（A）为2.440，杂合度（He）为0.293。估计每个种群之间的总基因多样性（H_S = 0.2782）和遗传分化系数（G_（ST）= 0.0579）。根据这种种群的遗传结构，建议基因流（Nm = 3.85）很高，这可能与其水分散的下胚轴有关。还建议该种的交配系统是混合交配。

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