Euphorbia Pulcherrima
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Implicações de plantas daninhas do gênero euphorbia na produção de culturas: uma revisão
O gênero Euphorbia compreende cerca de 2.000 espécies, que variam de plantas anuais a árvores, incluindo C3, C4 e espécies CAM. As espécies de Euphorbia amplamente estudadas na agricultura incluem E. antiquorum, E. carollata, E. dentata, E. dracunculoides, E. esula, E. geniculata, E. granulata, E. helioscopia, E. heterophylla, E. hierosolymitana, E. hir
Planta daninha. Publicado em: 2013-09
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2. Phytophagous mites (Tetranychoidea: Tetranychidae, Tenuipalpidae) from natural vegetations in Lara, Venezuela
Phytophagous mites from natural vegetation have been scarcely studied in Venezuela. Surveys were carried out from March 2007 to November 2008 to determine diversity of phytophagous mites inhabiting in different plant taxa in Iribarren, Jiménez, Palavecino, Morán and Crespo municipalities from Lara state, Venezuela. In each sampling site, a 500 m- transect
Biota Neotropica. Publicado em: 2009-12
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3. Proliferação de ramos em plantas comerciais de bico-de-papagaio associada a fitoplasma do grupo 16srIII
Bico-de-papagaio é uma espécie ornamental, encontrada tanto na forma de arbustos, presente em jardins residenciais e públicos, como comercializada em vasos para decoração de interiores. Com o objetivo de detectar a presença de fitoplasma em plantas mostrando sintomas de proliferação de ramos, amostras foram obtidas de plantas sintomáticas e assintom
Fitopatologia Brasileira. Publicado em: 2006-08
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4. Anthocyanins in Bracts of Euphorbia Pulcherrima as Revealed by Paper Chromatographic and Spectrophotometric Methods. 1
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5. Disappearance of Porphobilinogen Deaminase Activity in Leaves Before the Onset of Senescence 1
The activity of porphobilinogen deaminase was measured in young and senescent or mature leaves of pepper (Capsicum annuum), and poinsettia (Euphorbia pulcherrima). Whereas high activity was found in the crude extracts of the young leaves, almost no activity was found in the extracts of senescent or mature leaves. The decrease in deaminase activity was not du
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6. Epinasty of Poinsettias—the Role of Auxin and Ethylene
Upward physical restraint of the normally horizontal bracts of poinsettia (Euphorbia pulcherrima Willd.) resulted in increased ethylene production and epinastic curvature of the petioles after 5 days. Downward restraint caused little change in ethylene production or epinasty, indicating that the enhanced ethylene production observed in petioles bent upwards