Water potential and viability of seeds of Eugenia (Myrtaceae), a tropical tree species, based upon different levels of drying

Autor(es)

Delgado, Liliana Ferreira ^[1] ; Barbedo, Claudio Jose ^[2]

Afiliação do(s) autor(es)

^[1] Inst Bot, Programa Posgrad Biodiversidade Vegetal & Meio Am, BR-04301012 Sao Paulo - Brazil

^[2] Inst Bot, Nucleo Pesquisa Sementes, BR-04301012 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Brazilian Archives of Biology and Technology; v. 55, n. 4, p. 583-590, JUL-AUG 2012.
• Citações Web of Science: 7

Resumo

The aim of the present work was to study the water potential and viability of Eugenia based upon different levels of drying. The seeds showed high water content at shedding and were sensitive to desiccation; however, the level of this sensitivity (water content) varied among the species. Five target drying levels were defined according to the critical levels of hydration. Results showed that water potential seemed to be more reliable than water content. It was hypothesize that the differences in desiccation tolerance, as well as recalcitrance, among the seeds of different species could be related to the maturity level of these seeds during shedding from the mother plant. Consequently, this could be a result of the evolution on how far the maturation process could represent an advantage for the species propagation. This could also mean that Eugenia seeds were dispersed at a maturity stage similar to that observed in immature orthodox seeds. (AU)

• Processo FAPESP: 02/12215-7 - Flora aromática da Mata Atlântica no Estado de São Paulo: composição química dos óleos voláteis e análise da atividade biológica
• Beneficiário: Paulo Roberto Hrihorowitsch Moreno
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• Processo FAPESP: 05/04139-7 - Carboidratos de plantas tropicais como moduladores de processos ecofisiológicos e indicadores de respostas a estresses ambientais
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