| Registro completo |
| Provedor de dados: |
Scientia Agricola
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| País: |
Brazil
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| Título: |
Marker-assisted selection of maintainer lines within an onion tropical population
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| Autores: |
Santos,Carlos Antonio Fernandes
Leite,Daniela Lopes
Oliveira,Valter Rodrigues
Rodrigues,Marciene Amorim
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| Data: |
2010-04-01
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| Ano: |
2010
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| Palavras-chave: |
Allium cepa
CMS
'Alfa São Francisco'
Tropical hybrid
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| Resumo: |
The traditional onion (Allium cepa) hybrid production requires the development of maintainer and male sterile lines and also a pollinator line with good specific combination ability. We report the identification of maintainer and male-sterile onion lines within the Brazilian 'Baia Periforme' derived population, 'Alfa São Francisco', associating random field pairing of male-fertile plants with selected male-sterile plants and PCR-based marker system monitoring S, T and N-cytoplasms. Male-sterile plants produced flowers with light green anthers which were easily detected in the field. A frequency of 2.0% of male-sterile plants was estimated in the 'Alfa São Francisco' sampled population. Male-sterile plants produced the 5'cob-marker 180-bp and the orfA501-marker 473-bp fragments, suggesting the T-cytoplasm type, while the maintainer line produced only the 5'cob-marker 180-bp. These identified lines will be important to develop tropical onion hybrids well-adapted to Brazilian low latitudes and to future comparative studies with other onion cytoplasmic genic male sterility systems.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000200015
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| Editor: |
São Paulo - Escola Superior de Agricultura "Luiz de Queiroz"
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| Relação: |
10.1590/S0103-90162010000200015
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| Formato: |
text/html
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| Fonte: |
Scientia Agricola v.67 n.2 2010
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| Direitos: |
info:eu-repo/semantics/openAccess
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