Data/hora: 09/06/2024 01:06:22

Biblioteca(s): | Embrapa Rondônia.
Data corrente: | 08/01/2009
Data da última atualização: | 25/02/2022
Autoria: | CEDILLO, D. S. O.; FERREIRA, F. M.; BARROS, W. S.; CRUZ, C. D.; DIAS, L. A. dos S.; ROCHA, R. B.
Afiliação: | Digner Santiago Ortega Cedillo, Instituto Nacional Autônomo de Investigações Agropecuárias; Fábio Medeiros Ferreira, Universidade Federal de Viçosa; Willian Silva Barros, Universidade Federal do Amazonas; Cosme Damião Cruz, Universidade Federal de Viçosa; Luiz Antônio dos Santos Dias, Universidade Federal de Viçosa; Rodrigo Barros Rocha, Embrapa Rondônia.
Título: | Selection among and within and combined selection in oil palm families derived from Dura x Dura.
Ano de publicação: | 2008
Fonte/Imprenta: | Ciência Rural, Santa Maria, v. 38, n. 1, p. 65-71, jan-fev. 2008.
Idioma: | Inglês
Conteúdo: | Oil palm, in view of the worldwide consumed oil, is a perennial crop of great importance. Nevertheless, the genetic improvement is still incipient. In this study we applied the selection among and within families and the combined selection, based on the phenotypic values and phenotypic performance (Pi statistic), to verify which strategy obtained the highest genetic gains. Five full-sib families were evaluated in randomized blocks, with five replicates and 12 plants per plot, over five years of successive harvests. The total number of bunches and the total fruit yield per year plant-1 were evaluated. Values of 1.00 and 0.25 for the ratio between the environmental variance among plots and the environmental variance among plants within the plot for both traits, respectively, were adequate for the estimation of the genetic parameters. The existence of genetic variability in the population Dura was verified for both evaluated traits. The combined selection, based either on the phenotypic values or on the underlying Pi statistic, resulted in the highest genetic gains. Despite the satisfactory gains since it translates the true yield potential of the evaluated genotypes and their performance stability.
Palavras-Chave: | Elaeis guineensis Jacq; Estatística Pi; Estratégias de seleção; Teste de famílias.
Thesagro: | Melhoramento Genético Vegetal.
Categoria do assunto: | --
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/232035/1/Selection-among.pdf
Registro original: | Embrapa Rondônia (CPAF-RO)
Exemplares: | CPAF-RO - (12950-1) - UPC - AP - DD - SP-3434 -  - 3434 - DIS