| Registro completo |
| Provedor de dados: |
PAB
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| País: |
Brazil
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| Título: |
Development of herbicide-tolerant irrigated rice cultivars
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| Autores: |
Rangel,Paulo Hideo Nakano
Moura Neto,Francisco Pereira
Fagundes,Paulo Ricardo Reis
Magalhães Junior,Ariano Martins de
Morais,Orlando Peixoto de
Schmidt,Andréa Branco
Mendonça,João Antônio
Santiago,Carlos Martins
Rangel,Priscila Nascimento
Cutrim,Veridiano dos Anjos
Ferreira,Márcio Elias
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| Data: |
2010-07-01
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| Ano: |
2010
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| Palavras-chave: |
Oryza sativa
Backcrossing
Clearfield rice
Microsatellites
Red rice
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| Resumo: |
The objective of this work was to develop new irrigated rice lines tolerant to imidazolinone herbicides. The backcross breeding procedure was used to transfer the imidazolinone tolerance allele from mutant 93AS3510 to the recurrent parents 'BRS 7 Taim' and 'BRS Pelota'. Individual herbicide-tolerant plants were selected in each generation, for three backcrossings (RC1 to RC3), followed by three selfing generations (RC3F1 to RC3F3). The best four RC3F3 lines for agronomic traits were genotyped with 44 microsatellite markers. The observed conversion index of the new imidazolinone-tolerant lines varied from 91.86 to 97.67%. Pairwise genetic distance analysis between these lines and 22 accessions from the Embrapa's Rice Germplasm Bank clustered the new lines with their respective recurrent parents, but not with 'IRGA 417', which was originally used as recurrent parent to derive IRGA 422 CL, the only imidazolinone-tolerant irrigated rice cultivar recommended for cultivation in Brazil. Therefore, these lines represent new options of genetically diverse imidazolinone-tolerant rice accessions. Lines CNA10756 ('BRS Sinuelo CL') and CNA10757 will be released for cultivation in the Clearfield irrigated rice production system in Rio Grande do Sul, Brazil.
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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=S0100-204X2010000700010
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| Editor: |
Embrapa Secretaria de Pesquisa e Desenvolvimento
Pesquisa Agropecuária Brasileira
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| Relação: |
10.1590/S0100-204X2010000700010
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| Formato: |
text/html
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| Fonte: |
Pesquisa Agropecuária Brasileira v.45 n.7 2010
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| Direitos: |
info:eu-repo/semantics/openAccess
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