Buscar

 

RI UFLA (Universidade Federal de Lavras) >
DFP - Departamento de Fitopatologia >
DFP - Artigos publicados em periódicos >

Please use this identifier to cite or link to this item: http://repositorio.ufla.br/jspui/handle/1/12500

Title: Combining ability of summer-squash lines with different degrees of parthenocarpy and PRSV-W resistance
???metadata.dc.creator???: Nogueira, Douglas Willian
Maluf, Wilson Roberto
Figueira, Antonia dos Reis
Maciel, Gabriel Mascarenhas
Gomes, Luiz Antonio Augusto
Benavente, Cesar Augusto Ticona
Keywords: Cucurbita pepo
PRSV-W - Resistance
Papaya ringspot virus
Publisher: Sociedade Brasileira de Genética
Issue Date: 2011
Citation: NOGUEIRA, D. W. et al. Combining ability of summer-squash lines with different degrees of parthenocarpy and PRSV-W resistance. Genetics and Molecular Biology, Ribeirão Preto, v. 34, n. 4, p. 616-623, 2011.
Abstract: The aim was to assess heterosis in a set of 16 summer-squash hybrids, and evaluate the combining capacity of the respective parental lines, which differed as to the degree of parthenocarpy and resistance to PRSV-W (Papaya Ringspot Virus-Watermelon strain). The hybrids were obtained using a partial diallel cross design (4 × 4). The lines of parental group I were 1 = ABX-037G-77-03-05-01-01-bulk, 2 = ABX-037G-77-03-05-03-10-bulk, 3 = ABX-037G-77-03-05-01-04-bulk and 4 = ABX-037G-77-03-05-05-01-bulk, and of group II, 1′ = ABX-037G-77-03-05-04-08-bulk, 2′ = ABX-037G-77-03-05-02-11-bulk, 3′ = Clarice and 4′ = Caserta. The 16 hybrids and eight parental lines were evaluated for PRSV-W resistance, parthenocarpic expression and yield in randomized complete-block designs, with three replications. Parthenocarpy and the resistance to PRSV-W were rated by means of a scale from 1 to 5, where 1 = non-parthenocarpic or high resistance to PRSV-W, and 5 = parthenocarpic or high susceptibility to PRSV-W. Both additive and non-additive gene effects were important in the expression of parthenocarpy and resistance to PRSV-W. Whereas estimates of heterosis in parthenocarpy usually tended towards a higher degree, resistance to PRSV-W was towards higher susceptibility. At least one F1 hybrid was identified with a satisfactory degree of parthenocarpy, resistance to PRSV-W and high fruit-yield.
URI: http://repositorio.ufla.br/jspui/handle/1/12500
???metadata.dc.language???: en_US
Appears in Collections:DFP - Artigos publicados em periódicos

Files in This Item:

File Description SizeFormat
ARTIGO_Combining ability of summer-squash lines with different degrees of parthenocarpy and PRSV-W resistance.pdf451.17 kBAdobe PDFView/Open

This item is licensed under a Creative Commons License
Creative Commons

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.


View Statistics

 


DSpace Software Copyright © 2002-2010  Duraspace - Feedback