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Your search keyword '"Clement, Charles Roland"' showing total 13 results
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13 results on '"Clement, Charles Roland"'

5. Understanding the Technical-Scientific Gaps of Underutilized Tropical Species: The Case of Bactris gasipaes Kunth

Author

Kramer, Yasmin Verçosa, primary, Clement, Charles Roland, additional, de Carvalho, Josiane Celerino, additional, Fernandes, Andreia Varmes, additional, da Silva, Carlos Vinicius Azevedo, additional, Koolen, Hector Henrique Ferreira, additional, Aguiar, Jaime Paiva Lopes, additional, Nunes-Nesi, Adriano, additional, Ramos, Marcio Viana, additional, Araújo, Wagner L., additional, and Gonçalves, José Francisco de Carvalho, additional

Published
2023
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7. Updates on Geastrum sect. Exareolata, with a description of a striking new species from the Neotropics

Author

Cabral, Tiara .Sousa, Oliviera Sousa, Juliet de, da Denise Barbosa da Silva, Bianca, Martín, María P., Clement, Charles Roland, Goulart Baseia, Iuri, Cabral, Tiara .Sousa, Oliviera Sousa, Juliet de, da Denise Barbosa da Silva, Bianca, Martín, María P., Clement, Charles Roland, and Goulart Baseia, Iuri

Abstract

Geastrum is a genus with worldwide distribution and the most species-diverse in the family Geastraceae and is easily recognized by the star-like basidioma in the majority of species. The most recent and accepted classification based on phylogenetic, morphological and chemical data, subdivided the genus into 14 sections. The section Exareolata is formed by eleven species from which only G. echinulatum and G. verrucoramulosum are truly stipitate. During field trips in Brazilian Amazonia, we found a stipitate species of Geastrum. Based on morphological and phylogenetic data, we propose it as a new species for the genus, which forms a sister group of G. verrucoramulosum and is allocated in sect. Exareolata. Geastrum squameoramulosum sp. nov. is characterized by a prominent and well-developed ramified stipe and the presence of scales on the outer surface of the exoperidium. It is known so far only from the Amazon rainforest. We also provide an updated key to the species in this section.

Published
2022

8. Maize dispersal patterns associated with different types of endosperm and migration of indigenous groups in lowland South America

Author

Costa, Flaviane Malaquias, primary, Silva, Natalia Carolina de Almeida, additional, Vidal, Rafael, additional, Clement, Charles Roland, additional, Freitas, Fabio de Oliveira, additional, Alves-Pereira, Alessandro, additional, Petroli, César Daniel, additional, Zucchi, Maria Imaculada, additional, and Veasey, Elizabeth Ann, additional

Published
2022
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12. Domesticação de plantas

Author

Vieira, Leila do Nascimento, primary, Fraga, Hugo Pacheco de Freitas, additional, Serbin, Giulia Melilli, additional, Silva, Raquel Santos da, additional, Stefanello, Clarissa Alves, additional, and Clement, Charles Roland, additional

Published
2021
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13. Genetic diversity and mating system of Euterpe precatoriain three localities along the lower Solimões River in Central Amazonia

Author

Perrut-Lima, Poliana, Sebbenn, Alexandre Magno, Francisconi, Ana Flávia, Picanço-Rodrigues, Doriane, and Clement, Charles Roland

Abstract

Euterpe precatoriais a Neotropical palm from South and Central America and is hyperdominant in Amazonia, where it is increasingly important in the Brazilian market for açaí. Genetic diversity, population structure and mating system of E. precatoriawere characterized with 10 microsatellite markers in three localities (Codajás, Manacapuru, and Manaquiri) along the lower Solimões River, Amazonas, Brazil. Leaves of 63 mature palms were collected, as well as fruits from 30 of these to analyze 20 seedlings per progeny. Genetic differentiation across localities was substantial (GS′= 0.304) for mature palms, suggesting that gene flow is restricted between localities due to isolation by distance. Inbreeding was significant in progenies from all populations (ranging from 0.059–0.076), but not for mature palms, suggesting selection for heterozygosity during maturation to the adult stage. The outcrossing rate was high (0.917–1.0), confirming that the species is predominantly allogamous. Matings were not random due to the occurrence of biparental inbreeding (0.021–0.079) and correlated matings (0.059–0.424), so open-pollinated progenies present mixtures of self-sibs, half-sibs, full-sibs, and self-half-sibs, resulting in mean effective population size within progenies (2.23–3.06) lower than expected for a random mating population. The mating system’s characteristics are those expected in a predominantly allogamous hyper-abundant palm and suggest that human management of these often-anthropogenic populations is unlikely to reduce genetic diversity in the short term if done in situ, as practiced by Indigenous Peoples and local communities. Intensification will require careful attention to maintain genetic diversity.

Published
2023
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