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Information × Registration Number 2121U000955, Article popup.category Стаття Title popup.author Kuryata VolodymyrKuts BohdanaPrysedsky Yuriy popup.publication 01-01-2021 popup.source_user Донецький національний університет імені Василя Стуса popup.source https://r.donnu.edu.ua/handle/123456789/2572 popup.publisher Vilnius: Lietuvos mokslų akademija Description BIOLOGIJA. 2021. Vol. 67. No. 1. P. 23–34 © Lietuvos mokslų akademija Functional changes in the source-sink system of maize sprouts under combination of external (light/dark) and hormonal (gibberellic acid/retardant) factors during germination were studied. It was found that the phytohormone action significantly increased the coleoptile, root and seedling length, dry matter mass of organs, both in light and in dark. Tebuconazole caused the opposite effect due to its retardant action. The inactivation of endogenous phytohormone was confirmed by less intensive use of seed substances, the minimum dry matter of root and coleoptile and lower reserve utilization rates under tebuconazole influence, in particular under photomorphogenesis condition. The non-maximum mass of cotyledons may indicate a kind of optimization of use of reserves under tebuconazole treatment. Gibberellin stimulated starch breakdown in both light and dark, but starch usage was higher in dark. The lower content of sugar in the seeds of skotomorphic plants in control and under gibberellin action was explained by intense outflow for the organogenesis needs. Gibberellin stimulated the hydrolysis of reserve protein after intensive starch hydrolysis in dark. Specific gibberellin regulation of phosphorus outflow for the organogenesis processes under the photo- and skotomorphogenesis conditions and no regulation for potassium under photomorphogenesis conditions were found. popup.nrat_date 2025-01-09 Close