Abstract
The process of carrot (Daucus carota L.) somatic embryogenesis is highly sensitive to exogenously added ethanol, since 5 mM ethanol inhibits this process by 50%, whereas the growth of proliferating carrot cells is inhibited to the same extent by 20 mM ethanol. This is consistent with the fact that proliferating cultures produce ethanol and release it into the medium at concentrations up to 20 mM, whereas embryogenic culture medium contains less than 1 mM ethanol. Data are presented showing the influence of cell density and 2,4-dichlorophenoxyacetic acid on ethanol production and on the presence of an alcohol-dehydrogenase (EC 1.1.1.1.) inactivator in carrot embryos.
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