| Journal: | Anais da Academia Brasileira de Ciencias |
| Database: | PERIÓDICA |
| System number: | 000436165 |
| ISSN: | 0001-3765 |
| Authors: | Nardino, Maicon1 Barros, Willian S2 Olivoto, Tiago3 Cruz, Cosme Damiao4 Silva, Fabyano F.E5 Pelegrin, Alan J. de6 Souza, Velci Q. de7 Carvalho, Ivan R8 Szareski, Vinicius J6 Oliveira, Antonio C. de6 Maia, Luciano C. da6 Konflanz, Valmor A |
| Institutions: | 1Universidade Federal de Vicosa, Departamento de Agronomia, Vicosa, Minas Gerais. Brasil 2Universidade Federal de Pelotas, Departamento de Matematica e Estatistica, Pelotas, Rio Grande do Sul. Brasil 3Universidade Federal de Santa Maria, Departamento de Fitotecnia, Santa Maria, Rio Grande do Sul. Brasil 4Universidade Federal de Vicosa, Departamento de Biologia Geral, Vicosa, Minas Gerais. Brasil 5Universidade Federal de Vicosa, Departamento de Zootecnia, Vicosa, Minas Gerais. Brasil 6Universidade Federal de Pelotas, Departamento de Fitotecnia, Pelotas, Rio Grande do Sul. Brasil 7Universidade Federal do Pampa, Campus Sao Gabriel, Sao Gabriel, Rio Grande do Sul. Brasil 8Universidade Regional do Noroeste do Estado do Rio Grande do Sul, Ijui, Rio Grande do Sul. Brasil |
| Year: | 2020 |
| Volumen: | 92 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Aplicado, descriptivo |
| English abstract | In plant breeding, the dialelic models univariate have aided the selection of parents for hybridization. Multivariate analyses allow combining and associating the multiple pieces of information of the genetic relationships between traits. Therefore, multivariate analyses might refine the discrimination and selection of the parents with greater potential to meet the goals of a plant breeding program. Here, we propose a method of multivariate analysis used for stablishing mega-traits (MTs) in diallel trials. The proposed model is applied in the evaluation of a multi-environment complete diallel trial with 90 F1’s of simple maize hybrids. From a set of 14 traits, we demonstrated how establishing and interpreting MTs with agronomic implication. The diallel analyzes based on mega-traits present an important evolution in statistical procedures since the selection is based on several traits. We believe that the proposed method fills an important gap of plant breeding. In our example, three MTs were established. The first, formed by plant stature-related traits, the second by tassel size-related traits, and the third by grain yield-related traits. Individual and joint diallel analysis using the established MTs allowed identifying the best hybrid combinations for achieving F1’s with lower plant stature, tassel size, and higher grain yield |
| Disciplines: | Agrociencias |
| Keyword: | Fitotecnia, Genética, Fitomejoramiento, Mejoramiento genético, Selección genética, Selección multivariada, Análisis dialélico, Análisis multivariado, Zea mays |
| Keyword: | Crop husbandry, Genetics, Plant breeding, Genetic improvement, Genetic selection, Multivariate analysis, Multivariate selection, Diallel analysis, Multivariate analysis, Zea mays |
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