Data/hora: 13/06/2024 02:20:22

Biblioteca(s): | Embrapa Arroz e Feijão.
Data corrente: | 10/09/2021
Data da última atualização: | 10/09/2021
Autoria: | QUEIROZ, L. R. de; RODRIGUES, L. L.; MARTINS, S. M.; SOUZA, T. L. P. O. de; MELO, L. C.; PEREIRA, H. S.
Afiliação: | LARA RODRIGUES DE QUEIROZ; LUDIVINA LIMA RODRIGUES; SAULO MUNIZ MARTINS; THIAGO LIVIO PESSOA OLIV DE SOUZA, CNPAF; LEONARDO CUNHA MELO, CNPAF; HELTON SANTOS PEREIRA, CNPAF.
Título: | Recurrent selection for high iron and zinc concentrations in black bean grain.
Ano de publicação: | 2021
Fonte/Imprenta: | Bragantia, v. 80, e3121, 2021.
ISSN: | 1678-4499
DOI: | https://doi.org/10.1590/1678-4499.20200489
Idioma: | Inglês
Conteúdo: | The iron concentration (FeC) and zinc concentration (ZnC) in common bean grain are quantitative traits, and appropriate breeding techniques are required to achieve genetic gain. The aim of this study was to obtain a recurrent selection population of black bean to increase the FeC and ZnC in the grain and to select the superior progenies for formation of the next cycle and obtain lines. The base population was formed by crosses among ten parents. A total of 351 progenies were obtained, and, after two generations of selection, the 27 best progenies were evaluated in two field trials for FeC, ZnC, 100 seed weight and yield. Analyses of variance were carried out and genetic parameters were estimated. The heritability estimates ranged from 59 to 94% for the four traits. The estimates of expected gain from direct selection for each trait (3 to 21%) and simultaneous selection (1 to 4%) indicate success from selection. The eight progenies, selected based on simultaneous selection, have superior mean values, including to those of 'BRS Supremo' (10% for FeC, 8% for ZnC, 5% for 100 seed weight and 3.8% for yield), the Brazilian black bean cultivar with the highest FeC and ZnC. The recurrent selection population shows high genetic variability and potential for obtaining lines superior to the cultivars currently on the market, allying high agronomic performance and high FeC and ZnC in the grain. Furthermore, this population shows potential for generating a new recurrent selection cycle, from recombination of the eight superior progenies.
Palavras-Chave: | 100 seed weight.
Thesagro: | Feijão Preto; Ferro; Melhoramento Genético Vegetal; Phaseolus Vulgaris; Produção; Seleção Recorrente; Zinco.
Thesaurus Nal: | Biofortification; Black beans; Iron; Plant breeding; Recurrent selection; Zinc.
Categoria do assunto: | G Melhoramento Genético
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/225840/1/bragantia.pdf
Registro original: | Embrapa Arroz e Feijão (CNPAF)
Exemplares: | CNPAF - (36135-1) - UPC - AP - DD - 2021 -  - 2021 - DIS