Plant Genetic Resistance
Mostrando 25-36 de 246 artigos, teses e dissertações.
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25. Resposta de genótipos de citros à leprose e variabilidade genética da ORF p29 do vírus da leprose dos citros C (CiLV-C) / Response of citrus genotypes to leprosis and genetic variability of ORF p29 from Citrus leprosis virus C (CiLV-C)
Viruses have, potentially, broad genetic variability because of their need to adapt to several changes that they are exposed to. Therefore, genetic variability is essential for their survival; it is the first step to adapt to a new host, to break resistance down, to change symptoms and virulence, which justifies the interest in studies in this area. These st
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/05/2012
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26. Avaliação da reação de acessos de melancia para fitonematoides Meloidogyne enterolobii / Evaluation of the reaction of watermelon accessions to root-knot nematodes Meloidogyne enterolobii
A melancia é de grande importância econômica para o Estado do Rio Grande do Norte. Entretanto, nematoides figuram entre os agentes causadores de doenças que limitam a produção em várias áreas. Dentre as medidas de manejo, o controle químico de fitonematoides é normalmente caro e poucos vegetais cultivados, inclusive a melancia, foram avaliados para
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/03/2012
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27. Evaluation of resistance to Tomato severe rugose virus (ToSRV) in Capsicum spp. genotypes
Tomato severe rugose virus (ToSRV) is the predominant species of begomovirus in São Paulo State, Brazil, and infects primarily tomato and pepper plants. There is no information about genetic resistance of pepper to this virus, so in this work the reaction of 29 genotypes of Capsicum spp. was evaluated by inoculation of two ToSRV isolates: ToSRV-Sk (isolated
Trop. plant pathol.. Publicado em: 2012-10
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28. Relationship between leaf stages and epistasis for resistance to Stagonospora nodorum in durum wheat
Ten varieties and eight generations (2F1, 2F2, 2B1 and 2B2) of durum wheat derived from two crosses were evaluated for resistance to natural infection by Stagonospora nodorum blotch (SNB) at the 2-3 and 6-7 leaf stages at two sites over two years. There were significant differences in the incidence of SNB between leaf stages in most of the wheat varieties, w
Genetics and Molecular Biology. Publicado em: 24/05/2012
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29. Structure of genetic diversity of Bemisia tabaci (Genn.) (Hemiptera: Aleyrodidae) populations in Brazilian crops and locations
Bemisia tabaci (Genn.) represents a complex of cryptic species that causes losses of many valuable crops. Even though there are differences in their ability to colonize hosts, transmit phytovirus and develop resistance to insecticides, the genetic differentiation of the insect populations is important for the adoption of control measures. Therefore, the gene
Scientia Agricola. Publicado em: 2012-02
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30. Genetic approaches for studying transgene inheritance and genetic recombination in three successive generations of transformed tobacco
Transgene integration into plant genomes is a complex process accompanied by molecular rearrangements. Classic methods that are normally used to study transgenic population genetics are generally inadequate for assessing such integration. Two major characteristics of transgenic populations are that a transgenic genome may harbor many copies of the transgene
Genetics and Molecular Biology. Publicado em: 2012
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31. ResistÃncia genÃtica e induzida de Vigna unguiculata (L.) Walp. Ã Aphis craccivora Koch e sua amostragem / Genetic and induced resistance in Vigna unguiculata (L.) Walp. to Aphis craccivora Koch and its sampling
The objective of this work were: to evaluate resistance of cowpea genotypes [Vigna unguiculata (L.) Walp.] to the black aphid [Aphis craccivora Koch, 1854] and to study the genetic variability of these genotypes for this feature; to evaluate the possible inducible action of cis-jasmone to resistance to this pest; to study the spatial dispersion of the aphid
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 14/10/2011
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32. Mapeamento de QTL (Quantitative Trait Loci) associados à resistência do maracujá-doce à bacteriose / QTL mapping related to resistance of sweet passion fruit to bacterial blight
O maracujá-doce (Passiflora alata Curtis) é uma espécie nativa no Brasil. Seu cultivo tem crescido nos últimos anos devido a sua valorização no mercado in natura e seus usos na fitoterapia. Entretanto, os cultivos comerciais enfrentam problemas devido a ocorrência da bacteriose (Xanthomonas axonopodis pv. passiflorae). O patógeno é endêmico no paí
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/07/2011
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33. Genetic control of the angular leaf spot reaction in common bean leaves and pods
Information about genetic control of plant reaction to pathogens is essential in plant breeding programs focusing resistance. This study aimed to obtain information about genetic control of the angular leaf spot reaction in leaves and pods from common bean (Phaseolus vulgaris L.) line ESAL 686. This line was crossed with cultivars Jalo EEP 558 (resistant), C
Scientia Agricola. Publicado em: 2011-12
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34. Utilizacao de marcadores moleculares em retrocruzamentos visando a resistencia do maracujazeiro-azedo a multiplas doencas.
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Planaltina. Publicado em: 2011
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35. Interação molecular planta-nematóide.
ABSTRACT: The endoparasitic sedentary phytonematodes of genera Heterodera, Globodera (known as cyst nematodes, CN) and Meloidogyne (the root-knot nematodes, RKN) are major crop phytopathogens, causing estimated losses of US$ 125 billion annually in the world. These plant-parasitic nematodes share some parasitism mechanisms, which ensure host-tissue invasion
Planaltina. Publicado em: 2011
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36. Diversidade genetica de especies silvestres de maracujazeiro com resistencia multipla a doencas com base em marcadores RAPD.
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Planaltina. Publicado em: 2011