Consulta: creatorFacets:"Geraldi,Isaías Olívio"
Registros recuperados: 2
Data/hora: 16/06/2024 20:32:08

New resistance genes in the Zea mays: exserohilum turcicum pathosystem
Provedor de dados: 74
Autores: Ogliari,Juliana Bernardi; Guimarães,Marco Antônio; Geraldi,Isaías Olívio; Camargo,Luis Eduardo Aranha.
The use of monogenic race-specific resistance is widespread for the control of maize (Zea mays L.) helminthosporiosis caused by Exserohilum turcicum. Inoculation of 18 Brazilian isolates of E. turcicum onto elite maize lines containing previously identified resistance genes and onto differential near-isogenic lines allowed the identification of new qualitative resistance genes. The inoculation of one selected isolate on differential near-isogenic lines, F1 generations and a BC1F1 population from the referred elite lines enabled the characterization of the resistance spectrum of three new genes, one dominant (HtP), one recessive (rt) and a third with non-identified genetic action. Three physiological races of the pathogen were also identified including two...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Northern leaf blight; Genetic inheritance; Resistance genes; Races; Maize.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000300017

Anatomical Study of Somatic Embryogenesis in Glycine max (L.) Merrill
Provedor de dados: 52
Autores: Fernando,Juliana Aparecida; Vieira,Maria Lúcia Carneiro; Geraldi,Isaías Olívio; Appezzato-da-Glória,Beatriz.
A comparative anatomical analysis of somatic embryogenesis in two soybean (Glycine max (L.) Merrill) genotypes was carried out. The somatic embryos were originated from cotyledonary explants obtained from immature zygotic embryos. The medium used for somatic embryogenesis induction was Murashige and Skoog, 1962, salts and Gamborg et al., 1968, vitamins (MSB) supplemented with 0.8 mg.L-1 of 2,4-D for genotype PI 123439 and 40 mg.L-1 of 2,4-D for ‘Williams 82’. Globular structures, constituted by meristematic cells, originated from subepidermal cell divisions of the cotyledonary mesophyll. In PI 123439, the globular structures presented tracheary differentiation among meristematic cells and they could follow distinct morphogenetic process depending on their...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max anatomy somatic embryogenesis 2; 4-D.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132002000300005