Efeito da temperatura e da luz na germinação de sementes de Acacia polyphylla DC.
By J. A. Neto, I. B. Aguiar, V. M. Ferreira. 2003
87 citations recorded by the source corpus.
Acacia polyphylla (Leguminosae-Mimosoideae) is a typical tree species of secondary succession in Brazil, important for restoration of degraded areas. The purpose of this work was to evaluate the seed germination under different temperatures and light conditions. Constant (15, 20, 25 and 30 oC) and alternating (20-30 oC) temperatures were evaluated, at an eight hours photoperiod under white light. Constant temperature of 25 oC was optimal and the light experiments were conducted at that temperature. Seeds were incubated in darkness and at photoperiods from 1 to 12 hours under white light (high red/far-red ratio), as well as at photoperiods under white light initiated and concluded with shade light (low red/far-red ratio). Germination percentage was not affected by the photoperiods under white light tested, but a photoperiod similar or higher than four hours was required for better initial seedling growth. Both germination percentage and speed was not affected by light of a low red/far-red ratio, but they decreased in darkness.
Subfields: Plant Science, Soil Science
View Paper: https://www.semanticscholar.org/paper/6929308107e980f420ad8df70440612b15b14ba3
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In Plant Science
Citations in the corpus
- Changes in tree and liana communities along a successional gradient in a tropical dry forest in south-eastern Brazil (2009, background): “Similarly, the germinative behaviour of A. polyphylla, fifth most abundant species in early stage plots, also indicates that it can germinate in different-sized gaps, exposed to diverse temperature and light conditions (Araújo Neto et al. 2003).”