Identification of QTLs in the 'Araguaia' (Oryza sativa subsp. japonica) x 'Maninjau' (Oryza sativa subsp. indica) rice population.
ABSTRACT - The objective of this work was to identify quantitative trait loci (QTLs) associated with the traits grain yield, plant height, and flowering, as well as superior inbred lines resulting from the intersubspecific cross between 'Araguaia' (Oryza sativa subsp. japonica) and 'M...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2024 |
| País: | Brasil |
| Institución: | Empresa Brasileira de Pesquisa Agropecuária (Embrapa) |
| Repositorio: | Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) |
| Idioma: | inglés |
| OAI Identifier: | oai:www.alice.cnptia.embrapa.br:doc/1171865 |
| Acceso en línea: | http://www.alice.cnptia.embrapa.br/alice/handle/doc/1171865 https://doi.org/10.1590/S1678-3921.pab2024.v59.03723 |
| Access Level: | acceso abierto |
| Palabra clave: | Molecular marker Recombinant inbred lines Desequilíbrio de ligação Arroz Linhagem Marcador Molecular Melhoramento Vegetal Oryza Sativa Linkage disequilibrium Rice Quantitative trait loci Single nucleotide polymorphism |
| Sumario: | ABSTRACT - The objective of this work was to identify quantitative trait loci (QTLs) associated with the traits grain yield, plant height, and flowering, as well as superior inbred lines resulting from the intersubspecific cross between 'Araguaia' (Oryza sativa subsp. japonica) and 'Maninjau' (Oryza sativa subsp. indica) rice population. A population consisting of 234 recombinant inbred lines (RILs) was assessed in two environments and genotyped using single nucleotide polymorphisms (SNPs) and SilicoDArT markers. Twenty-two QTLs accounting for phenotypic variation ranging from 3.94% to 35.36%, were identified as significant, as follows: six for grain yield, five for flowering, and eleven for plant height. New QTLs were consistently identified for height and flowering traits with the SNP marker 12_22887040, in both environments, and highlighted for assisted selection of early rice varieties. In both environments, the RIL 1572 with the greatest productivity (6,581 kg ha-1), precocity of 70 days to flowering, and the lowest plant height (90 cm) is highly recommended for integration into crosses with elite materials from the rice breeding program. |
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