Data/hora: 14/06/2024 02:38:58

Biblioteca(s): | Embrapa Café.
Data corrente: | 04/01/2023
Data da última atualização: | 04/01/2023
Autoria: | SILVA, V. A.; ABRAHÃO, J. C. de R.; REIS, A. M.; SANTOS, M. de O.; PEREIRA, A. A.; BOTELHO, C. E.; CARVALHO, G. R.; CASTRO, E. M.; BARBOSA, J. P. R. A. D.; BOTEGA, G. P.; OLIVEIRA, A. C. B. de.
Afiliação: | VÂNIA APARECIDA SILVA, EMPRESA DE PESQUISA AGROPECUÁRIA DE MINAS GERAIS; JULIANA COSTA DE REZENDE ABRAHÃO, EMPRESA DE PESQUISA AGROPECUÁRIA DE MINAS GERAIS; ANDRÉ MORAES REIS, UNIVERSIDADE FEDERAL DE LAVRAS; MELINE DE OLIVEIRA SANTOS, EMPRESA DE PESQUISA AGROPECUÁRIA DE MINAS GERAIS; ANTÔNIO ALVES PEREIRA, EMPRESA DE PESQUISA AGROPECUÁRIA DE MINAS GERAIS; CESAR ELIAS BOTELHO, EMPRESA DE PESQUISA AGROPECUÁRIA DE MINAS GERAIS; GLADYSTON RODRIGUES CARVALHO, EMPRESA DE PESQUISA AGROPECUÁRIA DE MINAS GERAIS; EVARISTO MAURO DE CASTRO, UNIVERSIDADE FEDERAL DE LAVRAS; JOÃO PAULO RODRIGUES ALVES DELFINO BARBOSA, UNIVERSIDADE FEDERAL DE LAVRAS; GUSTAVO PUCCI BOTEGA, UNIVERSIDADE FEDERAL DE LAVRAS; ANTONIO CARLOS BAIAO DE OLIVEIRA, CNPCa.
Título: | Strategy for selection of drought-tolerant arabica coffee genotypes in Brazil.
Ano de publicação: | 2022
Fonte/Imprenta: | Agronomy, v. 12, n. 9, 2022.
Páginas: | 13 p.
DOI: | https://doi.org/10.3390/agronomy12092167
Idioma: | Inglês
Conteúdo: | This study aimed to establish a strategy for drought-tolerant selection in Arabica coffee genotypes in Brazil, combining field trials under natural conditions with controlled growth condition experiments. A group of genotypes was evaluated in the greenhouse using 28 morphological, anatomical, and physiological traits. In addition, the productivity of genotypes was evaluated in the field. Under water deficit in the greenhouse, 13 studied traits showed significant genetic variance. For these traits, the heritability coefficients estimated based on the progeny mean ranged from 65 to 92%. A selection index combined with predicted means was applied at these traits to select four progenies for drought tolerance under greenhouse conditions. Under field conditions, the selection applied to genetic values that favored positive genetic gains in four progenies, indicating the potential use of these cultivars for breeding advanced generations. The selection results of coffee plants under greenhouse conditions matched the selection results in the field in a water-deficit region by 50% based on productivity; thus, two genotypes (H419-3-3-7-16-11 and H516-2-1-1-7-2) were identified that have both the productivity and morpho-anatomical traits that confer greater drought tolerance. Finally, we discussed possible strategies for the development of drought-tolerant cultivars.
Thesaurus Nal: | Coffea arabica var. arabica; Genotype; Plant breeding; Selection index.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1150626/1/Strategy-for-Selection-of-Drought.pdf
Registro original: | Embrapa Café (CNPCa)
Exemplares: | CNPCa - (1654-1) - UPC - AP - DD -  -  -  - DIS