Physiological Races
Mostrando 1-12 de 17 artigos, teses e dissertações.
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1. Characterization of Phytophthora nicotianae isolates from tobacco plants (Nicotiana tabacum) in Colombia
ABSTRACT The black shank disease caused by Phytophthora nicotianae causes losses in tobacco crops up 100%. In Colombia, P. nicotianae populations are poorly known causing wrong diagnostics and erratic management. Amplification of the Ypt1 gene and morphological characteristics of colonies, sporangia, chlamydospores and hyphae were used to identify P. nicotia
Revista Ceres. Publicado em: 2022
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2. Resistance of sweet potato clones to meloidogyne incognita races 1 and 3
The objective of this study was to evaluate sweet potato clones for resistance to root-knot nematode, Meloidogyne incognita races 1 and 3. For each nematode physiological race, a greenhouse experiment was set up in a randomized block experimental design with three replications and six plants per plot. Fifty-eight sweet potato clones from the UFVJM germplasm
Bragantia. Publicado em: 28/07/2015
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3. Classification of physiological races of Fusarium oxysporum f. sp. phaseoli in common bean
Fusarium wilt, caused by Fusarium oxysporum Schlecht. f. phaseoli Kendrick and Snyder (FOP), is a major disease of common bean, causing large economic losses. Genetic resistance is one of the main mechanisms of pathogen control, and knowledge of the physiological variability is fundamental in breeding for resistant cultivars. Thus, a method of pathogen class
Bragantia. Publicado em: 2015-03
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4. 'IAC Milênio' - Common bean cultivar with high grain quality
The Instituto Agronômico de Campinas - IAC registered the carioca type common bean cultivar IAC Milênio. The cultivar has a mean yield of 2831 kg ha-1, high grain quality with tolerance to darkening, and resistance to Fusarium oxysporum and physiological races 81, 89, and 95 of the anthracnose pathogen (Colletotrichum lindemuthianum).
Crop Breed. Appl. Biotechnol.. Publicado em: 2014-12
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5. Additional physiological races of coffee leaf rust (Hemileia vastatrix) identified in Kenya
Coffee leaf rust (CLR), caused by the fungus Hemileia vastatrix, is among the most important diseases affecting coffee all over the world. In Kenya, it is currently the second most important disease, and breeding coffee to obtain new resistant cultivars has been a priority. Over time, new rust pathogenic races able to infect hitherto resistant coffee genotyp
Trop. plant pathol.. Publicado em: 2012-12
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6. Identification of a new race of Hemileia vastratix in Brazil.
In this study, a survey of physiological races of Hemileia vastatrix was carried out on 34 coffee leaf rust populations collected at several coffee genotypes in Brazil. After the inoculation on leaf disc of coffee differential clones, the races I, II, III, XIII, XVII and XXXVII were characterised. This is the first report of race XXXVII on Coffea arabica in
In.: AUSTRALASIAN PLANT DISEASE NOTES. Publicado em: 2011
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7. Identification of a new race of Hemileia vastratix in Brazil.
In this study, a survey of physiological races of Hemileia vastatrix was carried out on 34 coffee leaf rust populations collected at several coffee genotypes in Brazil. After the inoculation on leaf disc of coffee differential clones, the races I, II, III, XIII, XVII and XXXVII were characterised. This is the first report of race XXXVII on Coffea arabica in
In.: AUSTRALASIAN PLANT DISEASE NOTES. Publicado em: 2011
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8. Hot spots for diversity of Magnaporthe oryzae physiological races in irrigated rice fields in Brazil.
Abstract ? The objective of this work was to evaluate the Magnaporthe oryzae pathotype diversity in new commercial irrigated rice fields in the Araguaia River Valley, state of Tocantins, Brazil. The causal agent of rice blast has heavily affected rice production in the region. Despite the efforts of breeding programs, blast resistance breakdown has been reco
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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9. Virulência de isolados de Colletotrichum gloeosporioides de populações selvagens de Stylosanthes spp.
Os objetivos deste trabalho foram determinar o padrão de virulência/avirulência e as raças de 274 isolados brasileiros de Colletotrichum gloeosporioides de populações selvagens de Stylosanthes spp. dos estados de Goiás, Bahia e Minas Gerais, em 12 acessos diferenciadores, e agrupar os isolados de acordo com a similaridade em virulência. Culturas mono
Pesquisa Agropecuária Brasileira. Publicado em: 2011
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10. Glutamine, glutamic acid and or yeast extract in the diet of weaned pigs / Glutamina, ácido glutâmico e ou extrato de levedura na dieta de leitoes desmamados
The present study aimed to evaluate the effects of the supplementation of different sources of protein concentrates, glutamine, acid glutamic and or yeast extract in diets of piglets from 26 to 44 days of age. At 22nd day of age, weaning day, 210 piglets, females and castrated males, crossbred of Landrace, Large White and Duroc races, with 6,79 kg average we
Publicado em: 2008
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11. Levantamento de Meloidogyne incognita em lavouras de algodÃo no noroeste do Paranà e seleÃÃo de genÃtipos de algodoeiro com resistÃncia a Meloidogyne incognita raÃa 3 / Survey of Meloidogyne incognita on cotton crops in northwest Paranà and selection of resistant cotton genotypes to Meloidogyne incognita race 3
Among the pathogens that reduce the cotton productivity in Brazil, Meloidogyne incognita is one of the most important by causing yield losses and for being widespread. The most recommended control methods to this species are the use of resistant cultivars and crop rotation systems. In ParanÃ, M. incognita races 3 and 4 have already been reported as cotton p
Publicado em: 2007
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12. IdentificaÃÃo de raÃas do nematÃide de cisto da soja [Heterodera glycines (Ichinohe)] a partir de populaÃÃes de campo e isolados monocÃsticos e resistÃncia de cultivares comerciais à raÃa 3 / Race identification of the soybean cyst nematode (SCN) Heterodera glycines (Ichinohe) from field populations and monocystic isolates and resistance of commercial cultivars to race 3
O nematÃide de cisto à um dos principais patÃgenos da cultura da soja a nÃvel mundial. No Brasil, este nematÃide encontra-se disseminado em praticamente todas as regiÃes produtoras de soja, sendo responsÃvel por perdas de produtividade variÃveis, dependendo do nÃvel de infestaÃÃo a campo. No ParanÃ, esta espÃcie encontra-se amplamente distribuÃ
Publicado em: 2007