中文摘要：

为研究不同海域的琼枝群体的遗传差异,试验对海南麒麟菜保护区内4个地点的琼枝群体进行了遗传差异分析。结果表明：所用的5对EST-SSR引物能扩增获得多态性条带,检测出的观察等位基因数平均为3.4个,有效等位基因数平均为2.006个;琼枝群体的平均基因杂合度（Ave_Het）为0.4891,总体期望杂合度（Exp_Het＊）为0.5320,观察杂合度（Obs_Het）平均值为0.6233;Shannon＇s信息指数在0.6638~0.9896之间;遗传分化显示有20.39%的遗传变异存在于群体之间,79.61%的遗传变异存在于群体之内。上述结果表明麒麟菜保护区内的琼枝群体存在差异。

英文摘要：

Abstract For the study of genetic differences ofBetaphycus gelatinae in different areas, we have comparatively analyzed the genetic diversity of B. gelatinae in Eucheuma reserve. The results showed that there were 5 SSR primers amplified with target bands. The numbers of observed and effective alleles were 3.4 and 2.00 6. Average gene heterozygosity was 0.489 1. The mean expected heterozygosity equaled 0.532 0. The observed heterozygosity was 0.623 3. Shannon information index is between 0.663 8-0.989 6. Genetic differentiation in 4 populations was 20.39%. About 79.61% of genetic variation was attributed within populations. The above results show that there are differences between B. gelatinae population.