| Journal: | Acta scientiarum. Agronomy |
| Database: | PERIÓDICA |
| System number: | 000459575 |
| ISSN: | 1679-9275 |
| Authors: | Lemos, Roxane do Carmo1 Ferreira, Getúlio Caixeta2 Silva, Reberth Renato da1 Abreu, Ângela de Fátima Barbosa3 Ramalho, Magno Antonio Patto1 |
| Institutions: | 1Universidade Federal de Lavras, Departamento de Biologia, Lavras, Minas Gerais. Brasil 2Universidade de Sao Paulo, Escola Superior de Agricultura "Luiz de Queiroz", Piracicaba, Sao Paulo. Brasil 3Empresa Brasileira de Pesquisa Agropecuaria, Arroz e Feijao, Santo Antonio de Goias, Goias. Brasil |
| Year: | 2022 |
| Volumen: | 44 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, analítico |
| English abstract | In Brazil, there is an increasing demand for common bean (Phaseolus vulgaris L.) cultivars having Carioca-type (cream-colored seed coat with brown stripes) beans which have a light color that persists for a longer time combined with the most possible upright plant architecture. However, plant breeders are finding it difficult to combine these two traits in the same cultivar. The aim of this study was to compare success in the selection of new common bean lines that combine the two traits in segregating populations with 25%, 50%, or 75% of the alleles from the parents contrasting in upright plant architecture or in bean grains with persistent light color. A biparental cross was performed between a parent with light-colored beans (P1) and another with upright plants (P2). Three populations were obtained from the F1 seeds, with allelic frequencies of 75%, 50%, and 25% of P1. Subsequently, progenies were evaluated in a similar number in each population in the F2:3, F2:4, F2:5, and F2:6 generations. The plant architecture (PA) and grain darkening (GD) traits were visually evaluated using a scoring scale. Genetic and phenotypic parameters were estimated for all generations. There was no expressive advantage in using populations with a greater allele proportion of the parent favorable to upright plant architecture or slow grain darkening either in releasing of variability or in the occurrence of progenies with favorable phenotypes for the two traits |
| Disciplines: | Agrociencias, Biología |
| Keyword: | Leguminosas, Genética, Fitotecnia, Frijol, Phaseolus vulgaris, Carioca, Morfología vegetal |
| Keyword: | Legumes, Genetics, Crop husbandry, Bean, Phaseolus vulgaris, Carioca, Plant morphology, Phaseolus vulgaris |
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