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vol. 10, nr. 1 (2007)
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Quality of diploid and tetraploid red clover depending on pre-sowing laser stimula-tion of seeds
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Marek Ćwintal, Mieczysław Wilczek
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Department of Detailed Plant Cultivation, Agricultural University, ul. Akademicka 15, 20-950 Lublin |
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vol. 10 (2007), nr. 1,
pp. 31-46
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abstract:
The influence of pre-sowing seed stimulation with laser radiation on organic substance as well as macro- and microelements content in diploid and tetraploid red clover was examined in 2002-2004. Dry matter, crude and true protein, crude fibre and its fractions, as well as P, K, Ca, Mg content were determined in plant samples. Samples were collected from a single cut in a sowing year and from two cuts in full-performance years. The weather conditions during the study were the primary factor that determined the red clover quality. The course of weather invoked significant differences in dry matter, true protein, hemicellulose, lignin, mineral ash, Ca and Mg content, as well as crude and true protein efficiencies per 1 hectare. Dajana cv. diploid , as compared to Bona cv. tetraploid, was characterized by significantly higher concentrations of dry matter, NDF, hemicellulose, lignin and crude and true protein efficiencies in full-performance years. Clover from the second cut was characterized by higher content of dry matter, crude and true protein, Ca and Mg; plants from the first cut contained more fibre, including NDF, ADF, hemicellulose, cellulose, lignin fractions, mineral ash, P, K, Fe, and Mo. Seed stimulation with laser radiation caused an increase of lignin concentration in fibre along with potassium; mineral ash in fibre and content of crude fibre in plants were decreased. Laser radiation had more intensive effects on plants in sowing year than in full-performance years.
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keywords:
red clover, quality, laser radiation, varieties
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original in:
Polish
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