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- Title
ANTIOXIDANT STATUS OF HYDROPONICALLY AND AQUAPONICALLY GROWN PLANT SPECIES.
- Authors
TOMOV, A.; PETROVA, D.; YOCHEVA, L.; GEORGIEVA, Z.; KARCHEVA, Z.; CHANEVA, G.
- Abstract
The study compared growth, pigment content and antioxidative stress response of Pisum sativum L., Zea mays L. and Lactuca sativa L., cultivated in hydroponic and aquaponic systems. It was observed that aquaponic farming of maize and lettuce together with goldfish (Carassius auratus L.) was highly efficient. Under these conditions, the increased growth and the highest pigment and reducing sugars' content were measured in the leaves of maize. At the same time, higher growth rate and metabolite content were also observed in letuce, but not in pea plants. In order to study the presence of oxidative stress conditions in the cultivation systems, the activities of superoxide desmutase (SOD), catalase (CAT) and guaiacol peroxidase (GPER) were determined. In maize, no large variations in SOD and CAT activities were recorded among the three experimental systems, while GPEP activity was slightly enhanced under aquaponics. The activity of SOD in lettuce was the highest in the hydroponic system (ES 1, tap water), analogous to the level of total peroxides. However, CAT and GPER activities were significantly increased under hydroponics (ES 2, Knop's solution) and aquaponics (ES 3). In contrast, P. sativum did not performed well under aquaponic conditions, where the highest MDA and total peroxides were measured, as well as the increased enzyme activities. Pea plants reached their best growth in the hydroponic system (ES 2). In summary, the aquaponic system proved to be the most favourable for maize growth, while lettuce developed equally well in both, the hydroponic (ES 2) and the aquaponic system.
- Subjects
CORN; OXIDANT status; PLANT species; CORN farming; LETTUCE; AQUAPONICS; CORN growth
- Publication
Oxidation Communications, 2021, Vol 44, Issue 2, p397
- ISSN
0209-4541
- Publication type
Article