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Revista Colombiana de Ciencias Hortícolas

versão impressa ISSN 2011-2173

Resumo

MORENO B., NATALIA ELIZABETH; MIRANDA, DIEGO  e  MARTINEZ M., FABIO ERNESTO. Germination of sugar apple (Annona squamosa L.) seeds submitted to estratification. rev.colomb.cienc.hortic. [online]. 2013, vol.7, n.1, pp.20-30. ISSN 2011-2173.

This research evaluated the effect of stratification on the germination of sugar apple seeds from Apulo, Cundinamarca. The effects of wet, cold stratification (8°C) (WCS) and wet, cold stratification followed by wet, warm stratification (25°C) (WCS+WWS) were evaluated for 15, 30 and 45 days for each treatment. After the application of these treatments, germination was tested in growth chambers at 30 and 35°C to determine the temperature effect on germination. The seeds had a higher germination rate (GR) and mean velocity of germination (MVG) with the application of WCS for 45 days at 35°C with a GR of 65.6%. The seeds kept at 30°C germinated later and showed a lower GR and MVG than germination at 35°C. Based on these results, it can be concluded that the temperature of 35°C improved the germination of sugar apple seeds. The response of sugar apple seeds to stratification (WCS and WCS+WWS) could indicate the presence of morpho-physiological dormancy.

Palavras-chave : temperature; dormancy; pregerminative treatments.

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