| Revista: | Scientia Agricola |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000455503 |
| ISSN: | 0103-9016 |
| Autores: | Silva, Karla Jorge da1 Pastina, Maria Marta3 Guimarães, Claudia Teixeira3 Magalhães, Jurandir Vieira3 Pimentel, Leonardo Duarte2 Schaffert, Robert Eugene3 Pinto, Marcos de Oliveira3 Souza, Vander Fillipe de4 Bernardino, Karine da Costa1 Silva, Michele Jorge da1 Borém, Aluízio2 Menezes, Cicero Beserra de3 |
| Instituciones: | 1Universidade Federal de Vicosa, Departamento de Biologia Geral, Vicosa, Minas Gerais. Brasil 2Universidade Federal de Vicosa, Departamento de Fitotecnia, Vicosa, Minas Gerais. Brasil 3Empresa Brasileira de Pesquisa Agropecuaria, Milho e Sorgo, Sete Lagoas, Minas Gerais. Brasil 4FT Sementes, Ponta Grossa, Parana. Brasil |
| Año: | 2021 |
| Volumen: | 78 |
| Número: | 6 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, analítico |
| Resumen en inglés | Sorghum breeding programs are based predominantly on developing homozygous lines to produce single cross hybrids, frequently with relatively narrow genetic bases. The adoption of complementary strategies, such as genetic diversity study, enables a broader vision of the genetic structure of the breeding germplasm. The purpose of this study was to evaluate the genetic diversity of sorghum breeding lines using structure analysis, principal components (PC) and clustering analyses. A total of 160 sorghum lines were genotyped with 29,649 SNP markers generated by genotyping-by-sequencing (GBS). The PC and clustering analyses consistently divided the R (restorer) and B (maintainer) lines based on their pedigree, generating four groups. Thirty-two B and 21 R lines were used to generate 121 single-cross hybrids, whose performances were compared based on the diversity clustering of each parental line. The genetic divergence of B and R lines indicated a potential for increasing heterotic response in the development of hybrids. The genetic distance was correlated to heterosis, allowing for the use of markers to create heterotic groups in sorghum |
| Disciplinas: | Agrociencias, Biología |
| Palabras clave: | Genética, Gramíneas, Sorgo, Sorghum bicolor, Híbridos, Heterosis, Marcadores SNP |
| Keyword: | Genetics, Gramineae, Sorghum, Sorghum bicolor, Hybrids, SNP markers, Heterosis |
| Texto completo: | Texto completo (Ver HTML) Texto completo (Ver PDF) |
