Sheu Y, Cunha-Machado A S, Gontijo A B P L, Favoreto F C, Soares T B C, Miranda F D
Departamento de Biologia, Centro de Ciências Exatas Naturais e da Saúde, Universidade Federal do Espírito Santo, Alegre, ES, Brasil
, , Brasil.
Genet Mol Res. 2017 Apr 20;16(2):gmr-16-02-gmr.16029636. doi: 10.4238/gmr16029636.
The Bromeliaceae family includes a range of species used for many purposes, including ornamental use and use as food, medicine, feed, and fiber. The state of Espírito Santo, Brazil is a center of diversity for this family in the Atlantic Forest. We evaluated the genetic diversity of five populations of the Bromeliaceae family, including specimens of the genera Aechmea, Billbergia (subfamily Bromelioideae), and Pitcairnia (subfamily Pitcairnioidea), all found in the Atlantic Forest and distributed in the state of Espírito Santo. The number of alleles per locus in populations ranged from two to six and the fixation index (F), estimated for some simple sequence repeats in bromeliad populations, was less than zero in all populations. All markers in the Pitcairnia flammea population were in Hardy-Weinberg equilibrium (P < 0.05). Moreover, significant deviations from Hardy-Weinberg equilibrium were observed at some loci in populations of the five bromeliad species. In most cases, this can be attributed to the presence of inbreeding or the Wahlund effect. The genetic diversity indices of five species showed greater allelic richness in P. flammea (3.55). Therefore, we provide useful information for the characterization of genetic diversity in natural populations of Aechmea ramosa, Aechmea nudicaulis, Billbergia horrid, Billbergia euphemia, and P. flammea in Atlantic Forest remnants in the south of Espírito Santo state.
凤梨科植物包括一系列用于多种用途的物种，包括观赏用途以及作为食物、药物、饲料和纤维的用途。巴西圣埃斯皮里图州是大西洋森林中该科植物的一个多样性中心。我们评估了凤梨科五个种群的遗传多样性，包括尖萼凤梨属、水塔花属（凤梨亚科）和铁兰属（铁兰亚科）的标本，所有这些都发现于大西洋森林且分布在圣埃斯皮里图州。种群中每个位点的等位基因数量在2到6个之间，并且针对凤梨科种群中一些简单序列重复估算的固定指数（F）在所有种群中都小于零。火红铁兰种群中的所有标记都处于哈迪 - 温伯格平衡（P < 0.05）。此外，在这五个凤梨科物种的种群中，在一些位点观察到了显著偏离哈迪 - 温伯格平衡的情况。在大多数情况下，这可归因于近亲繁殖或瓦伦德效应的存在。五个物种的遗传多样性指数显示火红铁兰的等位基因丰富度更高（3.55）。因此，我们为圣埃斯皮里图州南部大西洋森林残余地中的多穗尖萼凤梨、裸茎尖萼凤梨、刺水塔花、优美水塔花和火红铁兰自然种群的遗传多样性特征提供了有用信息。
