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Regulation of Avena Fatua Seed Germination by Smoke Solutions, Gibberellin A3 and Ethylene
Authors:J K?pczyński  B Bia?ecka  M E Light  J van Staden
Institution:(1) Department of Plant Physiology, University of Szczecin, Wąska 13, 71-415 Szczecin, Poland;(2) Research Centre for Plant Growth and Development, University of KwaZulu-Natal Pietermaritzburg, Private Bag X01, Scottsville , 3209, South Africa
Abstract:Dormant, intact Avena fatua L. (wild oat) seeds germinate poorly at 20 °C. Removing the hulls slightly increased germination. Treatment with smoke solutions increased the germination of both intact seeds and caryopses. Exogenous GA3, alone or in the presence of smoke solution, increased the germination of caryopses, while ACC shows a tendency to increase germination of caryopses only when applied in combination with smoke solution. Results suggest that GA3 and ethylene, but not smoke solutions, are involved in the regulation of α-amylase activity during germination. However, the participation of smoke solutions in the control of ACC oxidase activity cannot be excluded.
Keywords:ACC oxidase  Amylase  Avena fatua seeds  Caryopses  Ethylene  GA3  Gibberellin  Germination  Smoke solution
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