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Crop Breeding and Applied Biotechnology

versão impressa ISSN 1518-7853versão On-line ISSN 1984-7033

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ALMEIDA, Gabriella Queiroz de; CHAVES, Lázaro José; VIEIRA, Muza do Carmo  e  GANGA, Rita Maria Devós. Agronomic evaluation of a Hancornia speciosa Gomes germplasm collection from the Brazilian Cerrado. Crop Breed. Appl. Biotechnol. [online]. 2019, vol.19, n.1, pp.8-14.  Epub 11-Abr-2019. ISSN 1518-7853.  https://doi.org/10.1590/1984-70332019v19n1a02.

Hancornia speciosa Gomes is a fruit tree native to Brazil with potential for use in cropping systems. The objective of this study was to characterize accessions of a germplasm collection by evaluating agronomic traits. The collection was planted in 2005, in an experiment with 57 progenies and four replications, totaling 192 individual accessions from 29 natural subpopulations of four botanical varieties, from the Brazilian Cerrado. The components of variance were estimated using the restricted maximum likelihood (REML) procedure. Heritability coefficients show the potential of the collection as base population for selection programs. The trait number of fruits per plant presented the highest estimated selection gain. The accessions of H. speciosa var. cuyabensis are the ones with the greatest potential for selection based on plant size and productivity. Progenies with greater development in the juvenile phase are potentially more productive in the adult phase, allowing the early selection of superior genotypes.

Palavras-chave : Mangaba; genetic resources; ex situ conservation; early selection.

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