Data/hora: 09/06/2024 01:55:55

Provedor de dados: | 74
País: | Brazil
Título: | Genetic and ecological niche modeling of Calydorea crocoides (Iridaceae): an endemic species of Subtropical Highland Grasslands
Autores: | de Alencar,Juliana Lustosa Matos; Kaltchuk-Santos,Eliane; Fachinetto,Juliana; Tacuatiá,Luana Olinda; Forni-Martins,Eliana Regina; Stiehl-Alves,Eudes Maria; de Souza-Chies,Tatiana Teixeira.
Data: | 2018-01-01
Ano: | 2018
Palavras-chave: | Genetic differentiation; ISSR markers; Pollen viability; Cytogenetic analyses; Restricted distributed species.
Resumo: | Abstract Evolutionary analyses have been widely used for evaluation of genetic diversity of natural populations and correlate these data to the fitness of the species, especially in the case of threatened species. Calydorea crocoides occurs in a restricted area at altitudes from 800 to 1500 m in southern Brazil and is considered endangered. A study assessing genetic diversity, cytogenetic features and ecological niche was performed aiming to characterize C. crocoides by multidisciplinary approaches. Molecular data highlighted that most of the total variation (76%; p &lt; 0.001) was found within populations and the parameters of genetic diversity were high at the species level (PPB = 98.97%; I = 0.4319; h = 0.2821). Gene flow (Nm) was estimated in 0.97 individuals per generation. Cytogenetically, C. crocoides presents a bimodal karyotype and low asymmetry. DAPI banding pattern was uniform, but the CMA-signal evidenced a pericentric inversion in the population ESC688. The species presents high pollen viability and two different morphologies of pollen grains. Our data showed high levels of polymorphism maintained in this species that could ensure conservationist practices in which the main goal is to preserve the evolutionary potential of the species through the maintenance of genetic diversity.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000200327
Editor: | Sociedade Brasileira de Genética
Relação: | 10.1590/1678-4685-gmb-2017-0078
Formato: | text/html
Fonte: | Genetics and Molecular Biology  v.41 n.1 suppl.1 2018
Fonte: | info:eu-repo/semantics/openAccess