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Revista Brasileira de Fruticultura

versão impressa ISSN 0100-2945versão On-line ISSN 1806-9967

Resumo

FARIAS NETO, João Tomé; LINS, Paulo Manoel Pontes; RESENDE, Marcos Deon Vilela de  e  MULLER, Antônio Agostinho. Genetic selection in hybrid progenies of coconut palm. Rev. Bras. Frutic. [online]. 2009, vol.31, n.1, pp.190-196. ISSN 0100-2945.  http://dx.doi.org/10.1590/S0100-29452009000100026.

The present study aimed the genetic selection of superior hybrid individuals of coconut palm from the evaluation of 1080 plants for the production of fruits and fresh albumen, aiming the supply of improved seeds and/or clones for plantation in Pará. The experimental design was randomized blocks and the methods Blupis and Blupis-Biefeitos were used to identify in which plots were the best individuals and how many individuals had to be selected in each plot. The characters evaluated were: number of fruits (NF), weight of fresh albumen per fruit (WFAF) and weight of fresh albumen for plant (WAFP), in nine annual harvests. The estimates of the coefficients of genetic determination between averages of progenies varied from 81.12% to 97.38%, promoting a selective accuracy from 90.07% to 98.68% for the selection among hybrid families. The interaction families x harvests was of great magnitude for the characters NF and WFAF, as revealed by the low (40.77% 63.36%) genotypic correlations throughout the harvests. The Blupis -Biefeitos procedure indicated the selection of 66 plants, being 48 from the PB113 family and 18 from the PB111 family, propitiating a selection intensity of 6.1% and a genetic gain of 9.95%.

Palavras-chave : Cocos nucifera; BLUPIS; BLUP/REML; selection; mixed models.

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