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Crop Breeding and Applied Biotechnology

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

Resumo

CORREA, Elisia Rodrigues; NARDINO, Maicon; BARROS, Willian Silva  e  RASEIRA, Maria do Carmo Bassols. Genetic progress of the peach breeding program of Embrapa over 16 years. Crop Breed. Appl. Biotechnol. [online]. 2019, vol.19, n.3, pp.319-328.  Epub 31-Out-2019. ISSN 1518-7853.  https://doi.org/10.1590/1984-70332019v19n3a44.

The peach breeding program of the Brazilian Agricultural Research Corporation (Embrapa), addressing the adaptation to mild winter conditions, is one of the largest in the world and maintains a germplasm collection of nearly 900 accessions. The objective was to estimate the genetic progress in fruit weight (FW) and fruit development period (FDP) resulting from the above program, by analyzing data records of 16 years (2000 - 2015) of 65 genotypes. Based on samples of ≥ 10 fruits, the mean annual FW (in g) and FDP (in number of days) from full flowering to harvest were determined. In the 16 years, the gain in FDP consisted of respective reductions of about -12.8, -3.3, -2.8 days for canning peach, fresh peach and nectarine. However, the genetic progress in fruit weight was 5.3, 1.4 and -17.9 g fruit-1 for canning peach, fresh peach and nectarine, respectively.

Palavras-chave : Prunus persica; canning peach, fresh peach, fruit development period, fruit weight.

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