Fluctuation of endogenous cytokinins in leaves and roots of short-day and long-day tobacco associated with photoperiodic induction

Autor:	Lozhnikova, Veronika N., Krekule, J., Dudko, Nataliya, Chaïlakhyan, M. Kh.
Zdroj:	Biologia Plantarum; January 1986, Vol. 28 Issue: 1 p43-46, 4p
Abstrakt:	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 silvestrisincreasing 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:	Supplemental Index
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