Plant Taxonomy
Mostrando 13-24 de 51 artigos, teses e dissertações.
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13. Morphological and molecular diagnostics for plant-parasitic nematodes: working together to get the identification done
Nematodes are considered one of the most difficult organisms to identify due to their microscopic size, morphological similarity, limited number of distinguishable taxonomic characters and overlapping morphometric measurements. However, there are few trained nematode taxonomists remaining, primarily due to retirement without replacement and/or young scientis
Tropical Plant Pathology. Publicado em: 2011-04
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14. Solos calcimorficos da sub-regiao do Abobral, Pantanal Mato-Grossense.
As "cordilheiras" da sub-regiao do Abobral, Pantanal Mato-Grossense, tem como material de origem, conchas de moluscos transportadas da planicie de inundacao do rio Miranda, de aguas e sedimentos alcalinos. Os solos, desenvolvidos sobre material essencialmente carbonatico (calcimorficos), constituem-se em ilhas com vegetacao de mata semicaducifolia, isolada n
Corumba: EMBRAPA-CPAP. Publicado em: 2011
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15. Mancha foliar em Clerodendrum x speciosus no Brasil causada por Pseudocercospora clerodendricola sp. nov.
Uma nova espécie de fungo, Pseudocercospora clerodendricola é descrita em associação com Clerodendrum x speciosum (coração sangrento). Ela teve sua patogenicidade demonstrada pela inoculação de folhas sadias com discos de micélio. Manchas foliares equivalentes às observadas no campo foram produzidas 30 dias após a inoculação das plantas com disc
Tropical Plant Pathology. Publicado em: 2010-06
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16. Os Gêneros Eriosema (DC.) Desv.e Rhynchosia Lour.(Leguminosae-Papilionoideae) nos estados do Paraná e de Santa Catarina, Brasil / (The genus Eriosema (DC.) Desv. and Rhynchosia Lour. (Leguminosae- Papilionoideae) in Paraná and Santa Catarina states, Brazil)
Esta dissertação trata do estudo taxonômico de dois gêneros de Leguminosae nos estados do Paraná e de Santa Catarina. O primeiro artigo é intitulado "O gênero Eriosema (DC.) Desv. (Leguminosae- Papilionoideae) nos estados do Paraná e de Santa Catarina, Brasil". Neste estudo foram confirmados dez táxons: Eriosema campestre Benth. var. campestre, E. c
Publicado em: 2009
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17. Revisão taxonomica das especies neotropicais extra-amazonicas de Sloanea L. (Elaeocarpaceae) na America do Sul / Taxonomy review of neotropic species of extra-amazonian Sloanea L. (Elaeocarpaceae)
Elaeocarpaceae inclui 15 gêneros, com aproximadamente 500 espécies distribuídas em regiões tropicais e subtropicais do globo, em com exceção dos continentes africano e europeu. O gênero Sloanea reúne 120 táxons, dos quais cerca de 40 ocorrem no Brasil em diversos tipos de vegetação, principalmente na Floresta Amazônica e na Floresta Atlântica. O
Publicado em: 2009
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18. EVALUATION OF DYNAMICS AND DIVERSITY OF A NATURAL PASTURE UNDER DIFFERENT DISTURBANCE / AVALIAÇÃO DA DINÂMICA E DA DIVERSIDADE DE UMA PASTAGEM NATURAL SUBMETIDA A DIFERENTES DISTÚRBIOS
Dynamics of species, families and plant functional types (PFTs), and diversity of a natural grassland submitted or not to burning and grazing, in different relief positions (concave a convex slope) were evaluated. Treatments consisted of the associations of those three factors, in a completely randomized design, with variable number of replicates, from two t
Publicado em: 2009
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19. Caracterização de um novo begomovírus, Euphorbia yellow mosaic virus, no Brasil / Characterization of Brazilian begomovirus Euphorbia yellow mosaic virus
The amendoim-bravo (Euphorbia heterophylla; also known as painted euphorbia) is an important weed in several countries, interferes in the production of cultivated plants, and has a great potential as a reservoir of plant viruses. The objective of this study was to study the diversity of begomoviruses that infect amendoim-bravo plants, and characterize molecu
Publicado em: 2009
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20. Estudo da diversidade genetica e da taxa de cruzamento em Stylosanthes spp. atraves de marcores microssatelites / Genetic diversity and mating system in Stylosanthes spp. as revealed by microsatellite markers
In Brazil, most of the cattle are grown in cultivated pastures. Forage grasses belonging to the African genus Urochloa P. Beauv. have been the most commonly used, together with some American legumes. Soil degradation and high costs for reclaiming are the major problems of pastures, since nitrogen enrichment is necessary. Considering that legumes can fix atmo
Publicado em: 2009
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21. Systematics of Helieae Gilg (Gentianaceae) / Sistemática de Helieae Gilg (Gentianaceae)
Helieae, one of the six Gentianaceae tribes, comprises about 23 genera and over 200 species found exclusively in the Neotropics. It is a highly diverse assemblage of plants, which have traditionally been problematic regarding generic circumscriptions. Several Helieae genera were understudied and phylogenetic relationships within the tribe were unclear. On th
Publicado em: 2009
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22. Identificação de espécies vegetais por meio da análise de textura foliar / Plant species recognition by leaf texture analysis
Biodiversity of species existing in the plant kingdom make the use of traditional models of taxonomy, a process of classification traditionally performed manually, a very complex and time-consuming task. Most of difficulties in that process result from the existence of few researches on plant classification using mathematical and computational methods. In th
Publicado em: 2008
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23. Sistemática morfológica e molecular de ácaros fitófagos do gênero Brevipalpus Donnadieu de importância econômica e quarentária para o Brasil / Morphological and molecular systematics of phytophagous mites of brevipalpus donnadieu genus of economic and quarantine importance to Brazil
Brevipalpus Donnadieu is the most importante genus in the Tenuipalpidae family. This genus presents about 300 species distributed around the world. Brevipalpus mites present agricultural importance because they are pests of several crops and especially due to their role as vectors of serious plant viroses. In Brazil, the main Brevipalpus species are B. phoen
Publicado em: 2008
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24. Comportamento dos processos intra-organizacionais de aprendizagem tecnológica frente a uma mudança de estrutura de propriedade: o caso da TermoMacaé - PETROBRÁS
This academic work describes the interfirm technological learning processes behavior at a thermo plant throughout the years 2001 till 2007. Its former ownership structure was composed by two foreigners companies. This structure was changed by the acquisition of the company control by a Brazilian state owned company on April 2006. The company is a Natural Gas
Publicado em: 2008