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Allelopathic activity of Azadirachta indica A.Juss. on Handroanthus serratifoli...
Nascimento, Gabriel Messias da Silva; Leandro, Cícero dos Santos; Alcântara, Bruno Melo de; Miranda de Oliveira, Francisco AlexAllelopathy involves the direct or indirect, stimulating or inhibiting action, promoted by substances called allelochemicals which, when released into the environment, can interfere positively or negatively in the development and germination of surrounding species. The objective of this work was to evaluate the allelopathic potential of Azadirachta indica A.Juss (Meliaceae) leaves on seed germination and seedli...
Vegetative and reproductive phenology of Copaifera langsdorffii Desf. in differ...
Santos, Maria de Oliveira; Almeida, Bianca Vilar de; Campos, Natália Barbosa; Macedo, Julimery Gonçalves Ferreira; Macêdo, Márcia Jordana FerreiraThe phenology has been discussed according to climatic variations and the environmental characteristics of each physiognomy, trying to identify if there is variation in the vegetative and reproductive phenophases, for Copaifera langsdorffii Desf. in areas of the Cerradão, Carrasco and Humid Forest, Chapada do Araripe in Northeast Brazil and if they are correlated with seasonality. Monthly observation censuses w...
Flora and Annual Distribution of Flowers and Fruits in the Ubajara National Par...
Silveira, Andréa Pereira; Menezes, Bruno Sousa de; Loiola, Maria Iracema Bezerra; Lima-Verde, Luiz Wilson; Zanina, Dalva Neta eAlthough the conservation of tropical biodiversity depends on protected areas, there is still a very large ‘gap’ of knowledge on the flora of Brazilian reserves, especially in the Northeast region of Brazil. Field and herbarium surveys of the phanerogamic flora of the Ubajara National Park, located on the Brazilian Northeast, were made and analyses on phenology and dispersal syndromes were performed. 418 taxa (...
Passifloraceae s.s. na Chapada do Araripe, nordeste do Brasil
Souza, Francisca Graciele Leite Sampaio de; Silva, Maria Arlene Pessoa da; Loiola, Maria Iracema BezerraThe Chapada do Araripe is located between the states Ceará, Pernambuco and Piauí, covers different phytophysiognomies and recognized by high biological diversity and endemisms. The aimed with this floristic survey was to identify species of the Passifloraceae s.s. to the Chapada do Araripe, as well as know geographic distribution associated with preferred habitats and phenology, aiming to know better local flor...
Alelopatia em cinco espécies de Erythroxylum
Taveira, Leila Kelly Pereira Dutra; Silva, Maria Arlene Pessoa da; Loiola, Maria Iracema BezerraThe objective of this study was to determine the allelopathic potential of Erythroxylum rosuliferum O.E. Schulz; Erythroxylum stipulosum; Erythroxylum cuneifolium (Mart) O.E. Schulz; Erythroxylum vacciniifolium Mart. and Erythroxylum barbatum O.E. Schulz. Bioassays were performed to examine the seed germination and initial growth of seedlings of Lycopersicum esculentum Mill (tomato) and Allium cepa L. (onion) i...
Floristic composition of two areas of Caatinga in Chapada do Araripe
Sousa , José Fábio de Oliveira; Oliveira , Arycelle Alves de; Campos , Natália Barbosa; Almeida-Bezerra, José Weverton; Silva, Viviane Bezerra daThe Caatinga is the main vegetation formation in northeastern Brazil, occupying most of its area and being of total importance to the region, it has many endemic species, but a small percentage of its extension is protected by environmental laws. It is in it that the Chapada do Araripe is inserted, present in the states of Piauí, Pernambuco and Ceará, which has an enormous plant diversity, has several phytophys...
Flora and Annual Distribution of Flowers and Fruits in the Ubajara National Par...
Silveira, Andréa Pereira; Menezes, Bruno Sousa de; Loiola, Maria Iracema Bezerra; Verde, Luiz Wilson Lima; Zanina, Dalva Neta eAlthough the conservation of tropical biodiversity depends on protected areas, there is still a very large ‘gap’ of knowledge on the flora of Brazilian reserves, especially in the Northeast region of Brazil. Field and herbarium surveys of the phanerogamic flora of the Ubajara National Park, located on the Brazilian Northeast, were made and analyses on phenology and dispersal syndromes were performed. 418 taxa (...
Ficus Gomelleira Kunth (Moraceae) Ecophysiology and Phytochemical Prospecting
Oliveira , Alison Honorio de; Honorio , Amanda Oliveira Andrade; Fernandes, Priscilla Augusta de Sousa; Brito, Fernanda Leite Siebra deIn this research the allelopathic activities, of the extracts of the leaves of Ficus gomelleira Kunth (Gameleira) were addressed, as well as the phenological observations and their photochemical prospecting. The relative treatments were related to the dilutions of the extracts. The results obtained indicated that Ficus gomelleira extracts, negatively influenced the germination percentage. The germination speed ...
Floristic and dispersion syndromes of Cerrado species in the Chapada do Araripe...
Bezerra, Janetede de Souza; Linhares, Karina Vieiralves; Calixto Júnior, João Tavares; Duarte, Antônia Eliene; Mendonça, Ana Cleide Alcântara MoraisThrough this study, the objective was to contribute to the knowledge regarding floristic composition, classification and conservation status of the studied plant species as well as the dispersion syndromes of flora found in a disjoint Cerrado area in the Chapada do Araripe, Crato-CE. For the research development Rapid Survey method, applied in three walking lines (Line 1, Line 2 and Line 3) was adopted. Florif...