Data/hora: 16/06/2024 10:29:59

Biblioteca(s): | Embrapa Florestas.
Data corrente: | 03/07/2019
Data da última atualização: | 30/10/2019
Autoria: | MISTRO, J. C.; RESENDE, M. D. V. de; FAZUOLI, L. C.; VENCOVSKY, R.
Título: | Effective population size and genetic gain expected in a population of Coffea canephora.
Ano de publicação: | 2019
Fonte/Imprenta: | Crop Breeding and Applied Biotechnology, Viçosa, MG, v. 19, n. 1, Jan./Mar. 2019. 7 p.
DOI: | 10.1590/1984-70332019v19n1a01
Idioma: | Inglês
Conteúdo: | This work aimed to study the effective population size and genetic gain in a population of robusta coffee (Coffea canephora Pierre) and verify the possibility of using recurrent selection. The experiment comprised 25 treatments, consisting of 21 C. canephora progenies and four C. arabica (cultivars) grown in Brazil. The experimental design was a 5x5 quadruple balanced lattice, with 24 replications, with one plant per plot. Six harvests were performed in each plant. Statistical analysis was carried out using the mixed model methodology. The analysis showed high additive genetic variability, and the magnitude of the additive components prevailed over that of the dominance components. These facts revealed the plant population liability to undergo recurrent selection, whose expected genetic gains were high. Results suggest that the effective population size and inbreeding degree throughout recurrent selection cycles be monitored. During selective cycles, cloning with weak selection is required due to few progenies.
Palavras-Chave: | Additive components; Genética quantitativa; Robusta coffee.
Thesagro: | Café; Endogamia.
Thesaurus Nal: | Inbreeding; Quantitative genetics.
Categoria do assunto: | G Melhoramento Genético
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/199209/1/2019-M.Deon-CBAB-Effective.pdf
Registro original: | Embrapa Florestas (CNPF)
Exemplares: | CNPF - (56863-1) - UPC - AP - DD -  -  -  - DIS