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
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