Selection gains for the palm oil production from progenies of American oil palm with oil palm

Abstract

The objective of this work was to estimate the genetic parameters, correlations, and selection gains for the oil production of interspecific hybrids progenies between American oil palm, of ‘Manicoré’ origin, and oil palm, of ‘La Mé’ origin. Thirty-nine progenies were evaluated from the sixth to the ninth year after planting, for the productivity of fresh fruit bunches (PROD_FFB), oil content in the bunch (OCB), and palm oil productivity (PROD_OP). The genetic parameters and gains from direct (GDS) and indirect (GIS) selection were estimated for PROD_OP. High values of heritability for the CVg/CVe ratio indicated favorable conditions for the selection. With the selection of 20% of the progenies (selection in both sexes), the following estimates were obtained: 11.15% GDS for PROD_OP, 9.1% GIS for OCB, and 8.1% GIS for PROD_FFB. The PROD_OP of the progenies was of 6,175, 6,057, and 5,995 kg ha-1 per year with GDS and GIS for OCB and PROD_FFB, respectively. The restricted selection of the LM2T male genitor offspring resulted in 5.1% estimated GSD and in a mean of 5,800 kg ha-1 per year for PROD_OP. Selection gains for PROD_OP can be achieved immediately through the selection restricted to oil palm male genitors, and, in the medium and long term, through the interspecific reciprocal recurrent selection between American oil palm and oil palm populations.

Genetic gains for obtaining improved progenies of oil palm in Colombia

“…The result of obtaining high Δg in selecting a genetic trait of interest suggests the possibility of identifying genotypes carrying genes of interest for good transmission (Fellahi et al 2020). Research conducted by Gomes Junior et al (2021) in oil palm cultivars reported a Δg of 6% for oil to bunch (OB) and the production of fresh fruit bunches (FFB). Studies carried out in Ecuador in dura × dura crosses recorded genetic gains for bunch number (BNO) of 5.8% and for FFB of 1.4% for the entire breeding cycle (Cedillo et al 2008).…”

“…The success of breeding programs depends on genetic variability; in practice, the utility of genetic gain through selection allows for better breeding criteria for selecting genetically superior individuals (Gomes Junior et al 2021). In evaluating, selecting, and developing individuals who show genetic superiority in agronomic traits, estimating genetic gains becomes essential for the industry's success for different crops (Pavlotzky and Murillo 2014;Rocha et al 2021).…”