Effect of smoke-water and a smoke-isolated butenolide on the growth and genotoxicity of commercial onion |
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| Authors: | MG Kulkarni GD Ascough L Verschaeve K Baeten MP Arruda J Van Staden |
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| Institution: | 1. Research Centre for Plant Growth and Development, School of Biological and Conservation Sciences, University of KwaZulu-Natal Pietermaritzburg, Private Bag X01, Scottsville 3209, South Africa;2. Laboratory of Toxicology, Scientific Institute of Public Health (IPH), B 1050 Brussels, Belgium;3. Department of Biomedical Sciences, University of Antwerp, B 2610 Antwerp, Belgium;4. Departmento de Plantas de Lavoura, Faculty of Agronomy, Federal University of Rio Grande do Sul, Av. Bento Gonçalves 7712, Caixa Postal 15.100, CEP 91501-970 Avenida, Porto Alegre, Rio Grande do Sul, Brazil |
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| Abstract: | Smoke-water and a biologically active butenolide compound (3-methyl-2H-furo2,3-c]pyran-2-one) derived from burning plant material, show stimulating effects on a number of agricultural and horticultural crops. In these trials, onion (Allium cepa L.) plants were treated (drenched) with either a 1:500 (v/v) smoke-water solution or a butenolide solution of 10−10 M under greenhouse conditions. Onion plants supplied with smoke-water and butenolide solution exhibited a significantly greater number of leaves, increased leaf length, and a higher fresh and dry leaf weight than untreated plants at 175 days after seed sowing (DASS) (third harvest). In addition, smoke-water and butenolide-treated onion plants exhibited a significantly higher bulb diameter and bulb weight than untreated plants, when these plants were harvested at 175 DASS. Overall, smoke-water was more effective than butenolide and achieved the highest harvest index. Genotoxicity was not detected in the bulbs of onion when they were treated with either smoke-water or butenolide. |
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| Keywords: | Onion Allium cepa L Butenolide Smoke solutions Growth Bulb Genotoxicity |
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