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Effect of plant-derived smoke on germination, seedling vigour and growth of rapeseed (Brassica napus) under laboratory and greenhouse conditions

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This study highlights the influence of various dilutions of aqueous smoke extract (1/500, 1/100, 1/10 and 1/1 v/v) on germination, seedling vigour and growth traits of rapeseed (Brassica napus cv. Okapi) under laboratory and greenhouse conditions. Smoke extract treatments (1/100 and 1/500 v/v) significantly (P < 0.05) enhanced the germination percentage (25-28%), vigour index (up to 4-fold) and germination speed (up to 2-fold) compared with control. In greenhouse experiments, pre-soaking seeds in smoke dilutions of 1/500 and 1/100 significantly (P < 0.05) enhanced the growth of rapeseed plants at 30 and 50 days after seed sowing (DASS) compared with control. At 50 DASS, these smoke-extract dilutions increased the root length (22.5-65%), plant height (41-47.5%), root dry weight (2.4- to 3.4-fold), shoot dry weight (4.6- to 5.1-fold) and leaf area (3- to 3.7-fold) of rapeseed plants compared with untreated seeds.
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Document Type: Research Article

Publication date: October 1, 2012

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  • Seed Science and Technology (SST) is one of the leading international journals featuring original papers and review articles on seed quality and physiology as related to seed production, harvest, processing, sampling, storage, distribution and testing. This widely recognised journal is designed to meet the needs of researchers, advisers and all those involved in the improvement and technical control of seed quality.
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