Consulta: creatorFacets:"Stiehl-Alves,Eudes Maria"
Registros recuperados: 2
Data/hora: 02/06/2024 03:37:30

Genetic and ecological niche modeling of Calydorea crocoides (Iridaceae): an endemic species of Subtropical Highland Grasslands
Provedor de dados: 74
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.
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...
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

Seed traits of species from South Brazilian grasslands with contrasting distribution
Provedor de dados: 39
Autores: Martins,Alexandre Cristante; Marchioretto,Rafaella Migliavacca; Vieira,Ariane Tonetto; Stiehl-Alves,Eudes Maria; Santos,Eliane Kaltchuk dos; Souza-Chies,Tatiana Teixeira de.
ABSTRACT South Brazilian grasslands are among the most species-rich grasslands worldwide yet they have been suffering ongoing degradation due to land-use. Little is known about the reproductive ecology of the native species of these grasslands. Thus, our goal was to characterize seed traits and germination requirements of three native species of the tribe Tigridieae (Iridaceae, Iridoideae) due to its richness in the Pampa biome and the contrasting morphology, cytogenetics, and geographic distributions of its representatives. We tested if closely related species possess similar seed traits and whether species with wider distributions have broader germination requirements. Seed production and mass were estimated, and morphological analyses, germination...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dormancy; Functional traits; Germination; Grasslands; Iridaceae; Photoinhibition; Regeneration niche; Reproductive ecology; Seed morphology; Time-to-event analysis.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062020000400730