Effect of a plant-derived smoke extract, N6-benzyladenine and gibberellic acid on the thermodormancy of lettuce seeds |
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| Authors: | A Strydom A K Jäger J van Staden |
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| Institution: | (1) Nu Research Unit for Plant Growth and Development, Department of Botany, University of Natal Pietermaritzburg, P/Bag X01, 3209 Scottsville, South Africa |
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| Abstract: | The effects of a plant-derived smoke extract, BA and GA3 on the thermodormancy of Grand Rapids lettuce seeds were studied. Thermodormant lettuce seeds treated either with BA, GA3 or smoke extract alone did not germinate. Combinations of BA with smoke extract and BA with GA3 were most effective in overcoming induced thermodormancy. GA3 plus smoke did not break the induced thermodormancy. The effects of the different treatments on germination were concentration dependent. BA was most effective at 10–5 to 10–3
M in combination with smoke dilutions 1:5,000 to 1:1,000,000 in overcoming thermodormancy.Abbreviations BA
N6-benzyladenine;
- GA3
gibberellic acid;
- SM
smoke extract |
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| Keywords: | gibberellic acid Lactuca sativa L cv Grand Rapids N6-benzyladenine smoke extract thermodormancy |
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