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

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Author(s): RANGEL, P. H. N.; 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.

Summary: 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.

Publication year: 2007

Types of publication: Journal article

Unit: Embrapa Rice & Beans

Keywords: Agricultura, Arroz irrigado, Biotecnologia, Genética, Marcadores SSR, Melhoramento genético vegetal, Melhoramento populacional, Oryza Sativa, Produtividade de grãos, SCSBRS Tio Taka, Seleção Recorrente, Variedade

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