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Population genetic structure of Sisyrinchium micranthum Cav. (Iridaceae) in Itapuã State Park, Southern Brazil Genet. Mol. Biol.
Tacuatiá,Luana Olinda; Eggers,Lilian; Kaltchuk-Santos,Eliane; Souza-Chies,Tatiana T..
Sisyrinchium micranthum Cav. is a member of the family Iridaceae, which is distributed over the American continent. In Brazil, this species is found, not only in disturbed areas and coastal regions, but is also very common in urban centers, such as public parks, during the spring. Chromosome counts for North American specimens are 2n = 32 and 2n = 48, whereas in southern Brazil, there is a polyploidy series with three chromosome numbers, 2n = 16, 2n = 32, and 2n = 48. Population analyses using DNA molecular markers are inexistent for this species, in spite of its wide distribution and morphological variation. To study the genetic population structure of S. micranthum, five natural populations were accessed in a conservation park within the Atlantic Rain...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Iridaceae; ISSR-PCR; Mating system; Population genetics; Sisyrinchium micranthum.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000100014
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Genetic and ecological niche modeling of Calydorea crocoides (Iridaceae): an endemic species of Subtropical Highland Grasslands Genet. Mol. Biol.
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.
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 < 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...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Genetic differentiation; ISSR markers; Pollen viability; Cytogenetic analyses; Restricted distributed species.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000200327
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Studies on diversity and evolution of Iridaceae species in southern Brazil Genet. Mol. Biol.
Souza-Chies,Tatiana T.; Santos,Eliane Kaltchuk dos; Eggers,Lilian; Flores,Alice Mainieri; Alves,Eudes M. Stiehl; Fachinetto,Juliana; Lustosa,Juliana; Corrêa,Lauís Brisolara; Tacuatiá,Luana Olinda; Piccoli,Paula; Miz,Rogéria Beatriz.
Plants of the family Iridaceae are well represented in the grassland vegetation of southern Brazil, occurring in the Pampa and Atlantic Forest biomes. Nevertheless, little is known about the taxonomy and evolution of Iridaceae species in southern Brazil. The main goal of this review is to compile published information about South American Iridaceae, and to discuss the evolution and genetic diversity of the family presenting our own research data in the light of the published literature. The main focus is on the genera Calydorea, Cypella, Herbertia, and Sisyrinchium. Aspects of reproductive system and of pollinator attraction are also discussed.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cytotaxonomy; Molecular phylogenetics; Iridoideae; Population genetics; Diversity.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572012000600018
Registros recuperados: 3
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