A5013889621- Allelopathy and phytotoxic interactions
- Coffee research and impacts
- Plant and animal studies
- Plant Diversity and Evolution
- Cocoa and Sweet Potato Agronomy
- Fern and Epiphyte Biology
- Weed Control and Herbicide Applications
- Botanical Research and Chemistry
- Seed Germination and Physiology
- Ethnobotanical and Medicinal Plants Studies
- Plant Parasitism and Resistance
- Plant and Fungal Species Descriptions
- Paleontology and Stratigraphy of Fossils
- Plant Toxicity and Pharmacological Properties
- Growth and nutrition in plants
- Pesticide and Herbicide Environmental Studies
- Genetics and Plant Breeding
- Plant chemical constituents analysis
- Isotope Analysis in Ecology
- Sesquiterpenes and Asteraceae Studies
- Mercury impact and mitigation studies
- Ecology and Vegetation Dynamics Studies
- Plant tissue culture and regeneration
State University of Norte Fluminense
2015-2025
Cannabaceae, Moraceae, Ulmaceae and Urticaceae are members of the urticalean rosids clade (Rosales). Their infrafamilial infrageneric relationships remain poorly understood. The aim this study was to assess chemical similarities differences between families based on aromatic phenolic compounds. Analysis structural variability these compounds may help understand taxonomic clade. Data occurrence type were obtained from Scifinder database. Parameters protection, oxidation, skeletal...
Leaf anatomical traits are influenced by environmental and genetic factors; however, studies that investigate the genotype × environment interaction on these scarce. This study hypothesized (1) leaf anatomy of Coffea spp. genotypes is varied, (2) interactions between managements seasons significantly influence traits, inducing a clear adaptation to specific environments. Possible modifications in were investigated under different managements: full-sun monoculture at low-altitude (MLA), high...
Studies on phenols have gained attention owing to their abundance in plants and effects plant development. Phenols from forage grasses may exert phytotoxicity legume crops intercropping systems. We aimed identify morpho-anatomical variations Calopogonium mucunoides Desv. roots treated with phenolic compounds. Seeds of C. were (1) distilled water (control), (2) trans-cinnamic acid, (3) a mixture the flavonoids quercetin, rutin, kaempferol kaempferol-3-α-rhamnoside, or (4) combination...
Urochloa humidicola (Rendle) Morrone & Zuloaga is an exotic forage grass cultivated in Brazil. Previous studies have identified different phenolic compounds produced by this species, including flavonoids and p-coumaric acid, which been well-known as allelochemical compounds. We evaluated the morphology, anatomy ultrastructure of Calopogonium mucunoides roots exposed to found U. humidicola. Leaves were dried, crushed submitted extraction methanol solution, was fractionated through partition...
Herbicides are a key element in agriculture but they do cause environmental problems and natural alternatives being sought. In this context, invasive plants could provide an as yet unexplored source for the development of future herbicides. Urochloa humidicola has great potential Brazilian environments it hampers establishment other plants. The phytotoxicity U. root extracts been evaluated, major components have identified. extract was assessed wheat coleoptile assay on seeds troublesome...
ABSTRACT: Genetic variability is the basis for coffee genetic breeding. This study evaluated potential of leaf anatomy and morpho-agronomic traits in studies C. canephoracultivars. Ten genotypes were distributed randomized block designs with three replicates. Significant differences among detected by F-test (P < 0.05) 13 15 traits. These results evidenced heterogeneity studied cultivars, which essential composition breeding programs. The Scott-Knott test genotypes, grouped into up to four...
The effective establishment of native tree seedlings planted for restoration depends on overcoming abiotic and biotic filters. Allelopathy represents a type interspecific interrelationship characterized by the production release allelochemicals donor plants, thus affecting growth development target plants acting as filter. Assuming hypothesis that secondary metabolites plant species may affect community assembly processes, present work aims to evaluate allelopathic potential aqueous extracts...
The aim of this work was to evaluate the antifungal and antiparasitic activity roots Wunderlichia azulensis (Asteraceae). A CH2Cl2 partition W. tested against Candida tropicalis, C. buinensis Trypanosoma cruzi parasites. chemical study resulted in isolation identification dehydrobrachylaenolide (1), lasiodiplodin (2), a taraxerane-type triterpene (3) mixture sitosterol stigmasterol (4–5). Of 13 fractions tested, 5 7 were most bioactive ones. No live epimastigotes observed even after shortest...
As espécies de Wunderlichia (Asteraceae) são endêmicas das regiões central e leste do Brasil, geralmente encontradas em afloramentos rochosos sujeitas a altas irradiação solar temperatura. Tais condições sugerem ocorrência múltiplas adaptações xeromórficas azulensis. Este estudo visou caracterizar morfoanatomia dos órgãos vegetativos W. Raízes, caules folhas foram coletados um afloramento rochoso no Maciço Itaoca, Campos Goytacazes, RJ, Brasil. O material vegetal foi fixado, desidratado...