Establishment of the irrigated rice cultivar SCSBRS Tio Taka by recurrent selection.

• Autor(a) principal: RANGEL, P. H. N.
• Data de Publicação: 2007
• Outros Autores: BRONDANI, C., MORAIS, O. P. de, SCHIOCCHET, M. A., BORBA, T. C. de O., RANGEL, P. N., BRONDANI, R. P. V., YOKOYAMA, S., BACHA, R. E., ISHIY, T.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
• Texto Completo: http://www.alice.cnptia.embrapa.br/alice/handle/doc/212636
• topic: SCSBRS Tio Taka; Arroz irrigado; Oryza sativa; Melhoramento genético vegetal; Seleção recorrente; Variedade

This study aimed to present and discuss the recurrent selection methodology used in the development of the rice cultivar SCSBRS Tio Taka. This cultivar, derived from the population CNA-IRAT 4, achieves high yields and has agronomic traits related to a better performance in the pre-germinated cultivation system used in Santa Catarina State. The molecular characterization of Tio Taka and CNA-IRAT 4 parents with 16 SSR markers showed that one of the parents, BG 90-2, was highly similar to SCSBRS Tio Taka. The most probable reason was that SCSBRS Tio Taka was extracted from CNA-IRAT 4 in the second recombination cycle, preventing the ccurrence of a high level of recombination and favoring the phenotypic selection of plants derived from crosses with BG 90-2 as parent, once this line has one of the best plant architectures and yields.