Fluctuation of endogenous cytokinins in leaves and roots of short-day and long-day tobacco associated with photoperiodic induction
Autor: | Jan Krekule, Nataliya Dudko, V. N. Lozhnikova, M. Kh. Chailakhyan |
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Rok vydání: | 1986 |
Předmět: | |
Zdroj: | Biologia Plantarum. 28:43-46 |
ISSN: | 1573-8264 0006-3134 |
DOI: | 10.1007/bf02885319 |
Popis: | As the dynamics of changes in phytohormones may be involved in photoperiodic regulation of the rates of growth and flowering, fluctuation of cytokinins was followed in long-day and short-day tobacco. Zeatin (Z) and zeatin riboside (ZR) were identified in leaves and roots using a GC-MSC system. In plants of the long-day tobaccoNicotiana silvestris increasing the number of long-day inductive for flowering (10, 20, 30, 40 LD) resulted in a rise in ZR activity. Half the plants reached a reproductive stage on the 40th day of induction. In short-day Mam moth tobacco plants, short-day floral induction (10, 20, 30, 40 SD) caused similar but less marked changes in ZR. |
Databáze: | OpenAIRE |
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