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Helianthus tuberosus is economically important species. To improve characters of this energetic plant via genetic modification, production of callus tissue and plant regeneration are the first steps. A new, potentially energetic cultivar Albik was used in this study to test callus induction and regeneration. Callus was produced on leaves, petioles, apical meristems and stems from field-harvested plants...
The effect of different durations of exposure to 2,4-D on hypocotyls and cotyledons cultured in vitro was studied in Brassica napus L. cv. Kana. Organogenesis or callogenesis depended on the duration of explant exposure to MS medium supplemented with 2 mg/1 2,4-D (2,4-dichlorophenoxyacetic acid). Short treatment (1 and 3 days) with 2,4-D resulted in rhizogenesis on hypocotyls (100% and 98% of explants,...
The effect of fructose, glucose, maltose and sucrose at various concentrations on Brassica napus embryos was studied. The morphogenetic reaction depended on the type and concentration of sugar in the medium. The frequency of developing embryos was highest on sucrose, followed by maltose and glucose. Fructose did not stimulate embryo growth. Spectrophotometry of autoclaved fructose showed an absorbance...
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