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Articles

CYTOKININS INHIBIT LEAF SENESCENCE IN PELARGONIUM CUTTINGS

Article number

1079_40

Pages

325 – 330

Language

English

Abstract

Senescence in plants is a complex, genetically determined cell death program that is characterized by protein breakdown, and disintegration of chloroplasts followed by chlorophyll loss.
Cytokinins, including aromatic cytokinins and substituted phenyl urea with powerful cytokinin-like activity, are reported to have anti-senescence activities.
Hence, they play an important role in delaying the onset of leaf senescence.
We examined the possible use of cytokinins in delaying leaf senescence in Pelargonium × hortorum cuttings cultivar Katinka without adversely retarding rooting.
Treated leaves maintained low leaf chroma, high hue values and high chrophyll content because they remained green.
Applying aromatic cytokinin to Pelargonium cuttings had no effect on the rooting proportion (%). However, it reduced all other root parameters studied.
Our study showed that the investigated cytokinins are very effective in retarding leaf senescence.
When taken together with the ease of rooting cuttings, aromatic cytokinin (meta-Topolin) is a suitable alternative to phenyl urea (Thidiazuron) in delaying the onset of leaf yellowing in plants.

Publication

V International Conference Postharvest Unlimited

Authors

T.M. Mutui, H. Mibus, M. Serek

Keywords

meta-Topolin, Pelargonium × hortorum, rooting, thidiazuron, chlorophyll

Full text

https://doi.org/10.17660/ActaHortic.2015.1079.40

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M. Buccheri | T. D'ambrosio | M. Grassi | A. Caralla

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A.A. Alexopoulos | I.C. Karapanos | K.A. Akoumianakis | H.C. Passam

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L. Contador | P. Shinya | M. Díaz | E. Hernández | R. Infante

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Z.S. Ilić | L. Sunić

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M.A. Mustafa | A. Ali | G. Seymour | G. Tucker

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M. Vallone | M. Alleri | P. Catania

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H. Larsen | I. Måge | J. Børve | E. Vangdal

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