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Type: Artigo de periódico
Title: Structural And Physiological Changes In Seeds And Seedlings Of Copaifera Langsdorffii Desf. (leguminosae-caesalpinioideae) Submitted To Sodium Hypochlorite Treatment [alterações Estruturais E Fisiológicas Em Sementes De Copaifera Langsdorffii Desf.-leguminosae-caesalpinioideae Submetidas Ao Tratamento Com Hipoclorito De Sódio]
Author: Noleto L.G.
Pereira M.F.R.
do Amaral L.I.V.
Abstract: We determined the effect of Sodium Hypochlorite (NaClO) immersion on the seed coat, germination and establishment of seedlings of Copaifera langsdorffii Desf. (copaiba; diesel tree; kerosene tree; Langsdorf's copaifera). Cuticle removal of the seed coats treated with 2.5% NaClO was shown by Sudan IV staining and scanning electronic microscopy. Treatment with NaClO increased water uptake by the seeds during the early stages of imbibition. The cell walls of cotyledons stained with ferric chloride showed phenolic compounds with putative inhibitory proprieties upon germination. Immersion in NaClO was the treatment most favorable to seedling emergence (54%) when compared to mechanical scarification (2%) and untreated control seeds (14%). These results indicate that NaClO is an efficient option for large-scale seedling production, principally due to its antiseptic proprieties.
Rights: aberto
Identifier DOI: 
Date Issue: 2010
Appears in Collections:Unicamp - Artigos e Outros Documentos

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