Morphological and physiological differences between aeroponically and hydroponically grown sunflower plants.

A. Szabó-Nagy, M. D. Abdulai, L. Erdei

Research output: Contribution to journalArticle

Abstract

The effects of aeroponic (AP) and hydroponic (HP) conditions on growth rate, morphological traits, potassium uptake and redox activities were compared in sunflower seedlings. Higher growth rate was found under HP than AP conditions and morphological traits were also different. The thickness of AP grown roots increased and new lateral roots with thickened root hairs were formed while the length of AP roots was small. Microscopical studies on cross-sections of the embedded root segments showed that the diameter of cross-section, the diameter of stele and the width of cortex of AP grown roots were significantly higher than those of HP plants. The element composition of AP or HP grown plants also differed, due to the different ion uptake processes. Potassium (86Rb+) uptake of AP grown plants was low and it seemed to be a passive process, while in case of HP grown plants it was decreased by both dinitrophenol and ferricyanide suggesting that the uptake process was coupled to the proton gradient. Roots of AP grown plants showed high ferricyanide reductase activity and it was accompanied by an increased acidification of the medium.

Original languageEnglish
Pages (from-to)25-37
Number of pages13
JournalActa Biologica Hungarica
Volume45
Issue number1
Publication statusPublished - 1994

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Hydroponics
Helianthus
Helianthus annuus
Potassium
hydroponics
Dinitrophenols
Acidification
Protons
Ions
ferricyanides
Chemical analysis
uptake mechanisms
potassium
cross section
Growth
Seedlings
Oxidation-Reduction
stele
aeroponics
hair

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)

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Morphological and physiological differences between aeroponically and hydroponically grown sunflower plants. / Szabó-Nagy, A.; Abdulai, M. D.; Erdei, L.

In: Acta Biologica Hungarica, Vol. 45, No. 1, 1994, p. 25-37.

Research output: Contribution to journalArticle

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