Data/hora: 08/06/2024 21:57:10

Biblioteca(s): | Embrapa Arroz e Feijão; Embrapa Clima Temperado; Embrapa Recursos Genéticos e Biotecnologia; Embrapa Unidades Centrais.
Data corrente: | 30/08/2010
Data da última atualização: | 06/06/2022
Autoria: | RANGEL, P. H. N.; MOURA NETO, F. P.; FAGUNDES, P. R. R.; MAGALHAES JÚNIOR, A. M. de; MORAIS, O. P. de; SCHMIDT, A. B.; MENDONÇA, J. A.; SANTIAGO, C. M.; RANGEL, P. N.; CUTRIM, V. dos A.; FERREIRA, M. E.
Afiliação: | PAULO HIDEO NAKANO RANGEL, CNPAF; FRANCISCO PEREIRA MOURA NETO, CNPAF; PAULO RICARDO REIS FAGUNDES, CPACT; ARIANO MARTINS DE MAGALHAES JUNIOR, CPACT; ORLANDO PEIXOTO DE MORAIS, CNPAF; ANDRÉA BRANCO SCHMIDT, UNIVERSIDADE FEDERAL DE SANTA CATARINA; JOAO ANTONIO MENDONCA, CNPAF; CARLOS MARTINS SANTIAGO, CNPAF; PRISCILA NASCIMENTO RANGEL, bolsista CNPAF; VERIDIANO DOS ANJOS CUTRIM, CNPAF; MARCIO ELIAS FERREIRA, CENARGEN.
Título: | Development of herbicide-tolerant irrigated rice cultivars.
Ano de publicação: | 2010
Fonte/Imprenta: | Pesquisa Agropecuária Brasileira, v. 45, n. 7, p. 701-708, jul. 2010.
DOI: | https://doi.org/10.1590/S0100-204X2010000700010
Idioma: | Inglês
Conteúdo: | 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.
Palavras-Chave: | Arroz Clearfield; Clearfield rice; Microssatélite.
Thesagro: | Arroz; Arroz vermelho; Melhoramento genético vegetal; Oryza Sativa; Retrocruzamento.
Thesaurus Nal: | Backcrossing; Microsatellite repeats; Red rice; Rice.

Categoria do assunto:

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F Plantas e Produtos de Origem Vegetal

URL:

http://ainfo.cnptia.embrapa.br/digital/bitstream/item/105837/1/Development-of-herbicide.pdf
http://ainfo.cnptia.embrapa.br/digital/bitstream/item/19081/1/45n07a10.pdf

Registro original: | Embrapa Arroz e Feijão (CNPAF)

Exemplares:

CNPAF - (30066-1) - UPC - AP - DD - 2010 -  - 2010 - DIS
CPACT - (13738-1) - UPC - AP - PP - 00107 -  - 2010.00107 - DIS
AI-SEDE - (48301-1) - UPE - AP - PP - 630.72081 - P474 -  - DIS
CENARGEN - (32795-1) - UPC - AP - PP - 630.5 -  -  - DIS