| Revista: | Acta scientiarum. Agronomy |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000459937 |
| ISSN: | 1679-9275 |
| Autores: | Eisele, Tauana Gibim1 Lazzari, Dener1 Silva, Tereza Aparecida da1 Pinto, Ronald José Barth1 Matsuzaki, Robson Akira1 Maioli, Maria Fernanda de Souza Dias1 Alves, Alex Viana1 Amaral-Junior, Antônio Teixeira do2 |
| Instituciones: | 1Universidade Estadual de Maringa, Departamento de Agronomia, Maringa, Parana. Brasil 2Universidade Estadual do Norte Fluminense, Laboratorio de Melhoramento Genetico Vegetal, Campos dos Goytacazes, Rio de Janeiro. Brasil |
| Año: | 2021 |
| Volumen: | 43 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, analítico |
| Resumen en inglés | Our objectives were to evaluate general and specific combining ability (SCA) and genetic divergence among tropical maize inbred lines using single sequence repeat (SSR) markers. Thirteen inbred lines were crossed based on a complete diallel scheme. Hybrids and three checks were evaluated in a lattice experimental design. Silk and anthesis flowering, average plant height, average ear height, white spot (Pantoea ananatis) and gray leaf spot (Cercospora zeae-maydis) severity, and grain yield were evaluated. Significant differences (p < 0.05) for general and specific combining abilities were observed for all traits. Based on additive effects, inbred lines 1 (Flash) and 12 (SG 6015) were selected to reduce the flowering period and plant and ear height. Inbred lines 2 (CD 303) and 3 (AG 8080) were selected to reduce disease severity. For the simultaneous increase in grain yield and reduced severity of diseases, line 11 (AG 9090) as a parent or tester in topcross schemes is recommended. According to non-additive effects, crosses 2 (CD 303) × 13 (DKB 747) and 11 (AG 9090) × 12 (SG 6015) were selected for grain yield and future breeding programs. Six groups were identified using SSR markers; a major group contained six inbred lines. Because of the minor relationship between genetic divergence and SCA effects on grain yield limits, the use of the groups for future divergent crosses is recommended |
| Disciplinas: | Agrociencias, Biología |
| Palabras clave: | Gramíneas, Genética, Maíz, Zea mays, Dialelos, Heterosis |
| Keyword: | Gramineae, Genetics, Corn, Zea mays, Dialleles, Heterosis |
| Texto completo: | Texto completo (Ver HTML) Texto completo (Ver PDF) |
