Consulta: creatorFacets:"Walker,Michael Andrew"
Registros recuperados: 3
Data/hora: 09/06/2024 18:02:04

Obtaining interspecific hybrids, and molecular analysis by microsatellite markers in grapevine
Provedor de dados: 86
Autores: Schuck,Mariane Ruzza; Biasi,Luiz Antonio; Mariano,Ada Michele; Lipski,Bernardo; Riaz,Summaira; Walker,Michael Andrew.
The objective of this work was to assess the potential of interspecific hybridization of Vitis labruscana and Muscadinia rotundifolia by using artificial cross-pollinations. Microsatellite markers were used to confirm interspecific hybridizations and the identity of the parental genotypes. In crosses in which M. rotundifolia was used as the female parent, no true hybrids were obtained. In the reciprocal crosses, 114 seedlings were identified as true V. labruscana x M. rotundifolia hybrids. Self pollination occurred in direct and in reciprocal crosses. The crossings between 'Bordo' x 'Carlos', 'Magnolia', 'Regale' and' Roanoke', and between' Isabel' x 'Bountiful', 'Carlos', 'Magnolia', 'Regale' and 'Roanoke' were confirmed. The 15 markers evaluated showed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Muscadinia rotundifolia; Vitis labruscana; Hybrid identification; Interspecific crosses; SSRs.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011001100009

Genome selection in fruit breeding: application to table grapes
Provedor de dados: 63
Autores: Viana,Alexandre Pio; Resende,Marcos Deon Vilela de; Riaz,Summaira; Walker,Michael Andrew.
ABSTRACT Genomic selection (GS) has recently been proposed as a new selection strategy which represents an innovative paradigm in crop improvement, now widely adopted in animal breeding. Genomic selection relies on phenotyping and high-density genotyping of a sufficiently large and representative sample of the target breeding population, so that the majority of loci that regulate a quantitative trait are in linkage disequilibrium with one or more molecular markers and can thus be captured by selection. In this study we address genomic selection in a practical fruit breeding context applying it to a breeding population of table grape obtained from a cross between the hybrid genotype D8909-15 (Vitis rupestris × Vitis arizonica/girdiana), which is resistant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: MAS; SSR markers; Linkage disequilibrium; Genomic selection.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000200142

Resistance to Pratylenchus brachyurus in Vitis species population through multivariate approaches and mixed models
Provedor de dados: 63
Autores: Santos,Paulo Ricardo dos; Viana,Alexandre Pio; Gomes,Vicente Martins; Preisigke,Sandra da Costa; Almeida,Odimar Ferreira de; Santos,Eileen Azevedo; Rodrigues,Daniele Lima; Rodrigues,Rosana; Walker,Michael Andrew.
ABSTRACT: Genetically diverse interspecific hybrids of Vitis were selected for resistance to Pratylenchus brachyurus. Three segregating populations with 57 hybrid crosses were evaluated. The parents included Vitis romanetiiC166-043 × 07355-075, 06354-047 × Cereza and 06354-047 × Nocera, selected from the germplasm bank at the University of California, Davis, the United States. The experiment was arranged in a randomized block design, with three replications and three plants per plot. Root mass, nematodes per gram of root and reproduction factor were determined and used as quantitative variables; 16 multi categoric descriptors were also evaluated. The traits were analyzed using the Ward-Modified Location Model procedure (Ward-MLM) for the composition of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Vitis genotypes; Nematode; Root; Genetic variability.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162019001500424