Effect of laser irradiation on seed germination and root yield of scorzonera (Scorzonera hispanica L.)
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| Authors: | Marcela Krawiec1, Agata Dziwulska-Hunek2, Salwina Palonka1, Magdalena Kapłan1, Piotr Baryła1 1Department of Seed Science and Horticultural Nursery, University of Life Sciences in Lublin ul. Leszczyński 58, 20-068 Lublin 2Department of Physics, University of Life Sciences, ul. Akademicka 13, 20-950 Lublin, Poland |
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| Abstract : | The problem in the cultivation of scorzonera is often poor, slow and non-uniform field emergence despite the use of seeds with high germination capacity for the sowing. The goal of the study was to determine the effect of pre-sowing laser stimulation of seeds on the germination, emergence and root yield of scorzonera. Seeds were irradiated with a He-Ne laser with wavelength of 632.4 nm. Two doses of laser beam irradiation were applied in terms of surface power density – 6 and 8 mW cm–2. Seeds were irradiated 1, 3 and 5 times, and the duration of each irradiation treatment was ca. 0.1 s. Seed treatment with laser light caused an increase of germination capacity, radicle length and dry weight of seedling, and an improvement of field emergence and only a partial increase of the total yield of roots. Depending on the irradiation dose applied, the germination capacity of the seeds increased by 1.5-13.2% in relation to the control. The most beneficial effect on the germination capacity and field emergence was that of the 5-time laser irradiation. Increase of total root yield as a result of pre-sowing seed irradiation was related with increased emergence. |
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| Keywords : | emergence, germination capacity, He-Ne laser light, seedlings | ||||||||
| Language : | english | ||||||||