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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Studium variability genů obalových proteinů viru mozaiky ředkvičky / A study of variability of capsid protein genes of Radish mosaic virus

HOLÁ, Marcela January 2008 (has links)
The part of RNA2 genome segment of several isolates of Radish mosaic virus (RaMV) including capsid protein genes was sequenced. Variability of capsid protein genes among the isolates of Radish mosaic virus was studied.
2

Cowpea severe mosaic virus : diagnóstico, estudo de herança e identificação de marcadores moleculares associados à resistência

SILVA, Erlen Keila Candido e 29 February 2008 (has links)
Submitted by (lucia.rodrigues@ufrpe.br) on 2017-03-10T15:16:59Z No. of bitstreams: 1 Erlen Keila Candido e Silva.pdf: 1861555 bytes, checksum: 78cac91a8beeeaf115c4336a93a9a4bd (MD5) / Made available in DSpace on 2017-03-10T15:16:59Z (GMT). No. of bitstreams: 1 Erlen Keila Candido e Silva.pdf: 1861555 bytes, checksum: 78cac91a8beeeaf115c4336a93a9a4bd (MD5) Previous issue date: 2008-02-29 / Conselho Nacional de Pesquisa e Desenvolvimento Científico e Tecnológico - CNPq / The cowpea, it plays important economical-social in the agriculture of the areas North and Northeast of Brazil. The Northeast is the largest Brazilian producer, where it is used broadly in the human feeding to the detriment of the common bean. Approximately 60% of thetotal area of bean in the Northeast are cultivated with cowpea. The culture generates 2,4 million direct jobs and it supplies the table of 27,5 million Northeasterners, what accredits theculture to receive support of the fomentation organs to the research.In the Brazilian Northeast, the mosaic,provoked by virus, due to the frequency and severity with that happen, they blunt as the most important diseases, being constituted in factor limitiong of the production. Among the viral illnesses, the severe mosaic of the cowpea, caused by Cowpea severe mosaic virus (CPSMV) it is responsible for losses of the order 60% to 100%. This way, the present study had for objectives determine the inheritance of the resistance and identify associated markers with resistance. The individuals' selection F2 to CPSMV was accomplished through inoculation with extract vegetable and the behavior of the population of the cowpea for observation symptoms and qui-square test. The selection of primers polymorphic was accomplished by the analysis of bulkers segregant (BSA). Primers potentially associated with resistance or susceptibility to CPSMV were evaluated in the population segregant. Of hte 85 primers tested, the primer VM 70 proved to be co-segregating with. This marker primers represents a new tool to assist in obtaining resistant cultivars, faster, accorate and economical in the analysis of the diagnosis of the virus of the severe mosaic it was verified that the technique of RT-PCR, comes as a fast and efficient method / O feijão-caupi, desempenha importante papel econômico-social na agricultura das regiões Norte e Nordeste do Brasil. O Nordeste é o maior produtor brasileiro, onde é largamente utilizado na alimentação humana em detrimento do feijão comum.Aproximadamente 60% da área total de feijão no Nordeste é cultivada com feijão-caupi. A cultura gera 2,4 milhões de empregos diretos e abastece a mesa de 27,5 milhões de nordestinos, o que credencia a cultura para receber apoio dos órgãos de fomento à pesquisa. No Nordeste brasileiro, os mosaicos, provocados por vírus, devido à frequência e severidade com que ocorrem, despontam como as doenças mais importantes, constituindo-se em fator limitante à produção. Dentre as viroses, o mosaico severo do feijão-caupi, causado pelo Cowpea severe mosaic virus (CPSMV) é responsável por perdas da ordem de 60% a 100%.Desta forma, o presente estudo teve por objetivos determinar a herança da resistência e identificar marcadores associados a resistência. A fenotipagem de indivíduos F2 resistentes aoCPSMV foi realizada através de avaliações dos sintomas após inoculação destas com extrato vegetal tamponado contendo vírus e o comportamento da população do feijão-caupi por observações sintomatológicas e teste de X. Nas análises moleculares, a seleção de primers potencialmente associados a resistência ou suscetibilidade ao CPSMV foram avaliados na população segregante. Dos 85 primers VM 70 mostrou-se co-segregando com a resistência. este marcador representa uma nova ferramenta que auxiliará na obtenção de cultivares resistentes de maneira mais rápida e econômica.Na análise diagnóstico do vírus do mosaico severo constatou-se que a técnica de RT-PCR, apresenta-se como um método rápido e eficiente.

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