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Acta Scientiarum. Agronomy

versão On-line ISSN 1807-8621

Resumo

COSTA, Rosiani Castoldi da; CALVETE, Eunice Oliveira; MENDONCA, Heloísa Ferro Constâncio  e  DECOSTA, Laís Aline. Phenology and leaf accumulation in vernalized and non-vernalized strawberry seedlings in neutral-days. Acta Sci., Agron. [online]. 2014, vol.36, n.1, pp.57-62. ISSN 1807-8621.  http://dx.doi.org/10.4025/actasciagron.v36i1.17285.

Phenology and phyllochron are parameters that help in characterizing vegetal growth and development. This study is an evaluation of the performance of the vernalized and non-vernalized Albion strawberry cultivar in relation to phenology and phyllochron in substrate. The experiments were developed in the greenhouse of the Horticulture Sector of the Universidade de Passo Fundo, Rio Grande do Sul State. The plants were placed in bags spread over wooden benches and filled with substrate formed by carbonized rice hulls and Mec Plant Horta 2®. The experimental design used for both experiments was randomized blocks with 4 repetitions and 8 plants per parcel. In each parcel, 4 plants were randomly marked and evaluated for phenology and phyllochron. For phenology, the dates of onset of flowering and fruiting and the beginning and the end of the harvest were registered. For phyllochron, a weekly count of the number of leaves was performed. A linear regression of the number of leaves (NL) in the main corona and the accumulated thermal time (Att) was performed. Vernalization predicts the cycle of the Albion cultivar, the leaf appearance rate and the phyllochron when compared to those without vernalization.

Palavras-chave : Fragaria x ananassa Duch.; phenologic stages; thermal time.

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