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Effects of melatonin on lettuce plant growth, antioxidant enzymes and photosynthetic pigments under salinity stress conditions

Hemat A. EL-Bauome

Hemat A. EL-Bauome

Vegetables and Floriculture Department, Faculty of Agriculture, Mansoura UniversityMansoura, Egypt
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EL-Bauome, Hemat A.
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Samar M. Doklega

Samar M. Doklega

Vegetables and Floriculture Department, Faculty of Agriculture, Mansoura UniversityMansoura, Egypt
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Doklega, Samar M.
, 
Said A. Saleh

Said A. Saleh

Horticultural Crops Technology Department, Agricultural and Biology Research Institute, National Research CentreGiza, Egypt
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Saleh, Said A.
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Ahmed S. Mohamed

Ahmed S. Mohamed

Horticultural Crops Technology Department, Agricultural and Biology Research Institute, National Research CentreGiza, Egypt
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Mohamed, Ahmed S.
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Ahmad A. Suliman

Ahmad A. Suliman

Horticultural Crops Technology Department, Agricultural and Biology Research Institute, National Research CentreGiza, Egypt
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Suliman, Ahmad A.
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Mahmoud A.M. Abd El-Hady

Mahmoud A.M. Abd El-Hady

Horticulture Department, Faculty of Agriculture, Damietta UniversityDamietta, Egypt
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Abd El-Hady, Mahmoud A.M.
  
05 lut 2024
Effects of melatonin on lettuce plant growth, antioxidant enzymes and photosynthetic pigments under salinity stress conditions's Cover Image
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Kategoria artykułu: ORIGINAL ARTICLE
Data publikacji: 05 lut 2024
Zakres stron: 1 - 17
Otrzymano: 30 wrz 2023
Przyjęty: 22 gru 2023
DOI: https://doi.org/10.2478/fhort-2024-0001
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© 2024 Hemat A. EL-Bauome et al., published by Sciendo
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Figure 1.

Effect of spraying MT on number of leaves ∙ plant-1 (A), fresh weight (B), leaf area (C) and dry matter (D) of lettuce plants under NaCl stress in the first season. Diverse letters refer to significant variation according to Duncan test. MT, melatonin.
Effect of spraying MT on number of leaves ∙ plant-1 (A), fresh weight (B), leaf area (C) and dry matter (D) of lettuce plants under NaCl stress in the first season. Diverse letters refer to significant variation according to Duncan test. MT, melatonin.

Figure 2.

Effect of spraying MT on number of leaves ∙ plant-1 (A), fresh weight (B), leaf area (C) and dry matter (D) of lettuce plants under NaCl stress in the second season. Diverse letters refer to significant variation according to Duncan test. MT, melatonin.
Effect of spraying MT on number of leaves ∙ plant-1 (A), fresh weight (B), leaf area (C) and dry matter (D) of lettuce plants under NaCl stress in the second season. Diverse letters refer to significant variation according to Duncan test. MT, melatonin.

Figure 3.

Effect of spraying MT on chlorophyll a (A), total chlorophyll (B), chlorophyll b (C) and carotenoids (D) on lettuce plants under NaCl stress in the first season. Diverse letters refer to significant variation according to Duncan test. MT, melatonin.
Effect of spraying MT on chlorophyll a (A), total chlorophyll (B), chlorophyll b (C) and carotenoids (D) on lettuce plants under NaCl stress in the first season. Diverse letters refer to significant variation according to Duncan test. MT, melatonin.

Figure 4.

Effect of spraying MT on chlorophyll a (A), total chlorophyll (B), chlorophyll b (C) and carotenoids (D) on lettuce plants under NaCl stress in the second season. Diverse letters refer to significant variation according to Duncan test. MT, melatonin.
Effect of spraying MT on chlorophyll a (A), total chlorophyll (B), chlorophyll b (C) and carotenoids (D) on lettuce plants under NaCl stress in the second season. Diverse letters refer to significant variation according to Duncan test. MT, melatonin.

Figure 5.

Effect of spraying MT on RWC (A), and EL (B) in the first season and RWC (C), and EL (D) in the second season of lettuce plants under NaCl stress. Diverse letters refer to significant variation according to Duncan test. EL, electrolyte leakage; MT, melatonin; RWC, relative water content.
Effect of spraying MT on RWC (A), and EL (B) in the first season and RWC (C), and EL (D) in the second season of lettuce plants under NaCl stress. Diverse letters refer to significant variation according to Duncan test. EL, electrolyte leakage; MT, melatonin; RWC, relative water content.

Figure 6.

Effect of spraying MT on MDA (A), H2O2 (B) and O2∙- (C) in the first season and MDA (D), H2O2 (E) and O2∙- (F) in the second season of lettuce plants under NaCl stress. Diverse letters refer to significant variation according to Duncan test. MDA, malondialdehyde; MT, melatonin.
Effect of spraying MT on MDA (A), H2O2 (B) and O2∙- (C) in the first season and MDA (D), H2O2 (E) and O2∙- (F) in the second season of lettuce plants under NaCl stress. Diverse letters refer to significant variation according to Duncan test. MDA, malondialdehyde; MT, melatonin.

Figure 7.

Effect of spraying MT on Na+ (A), and Cl- (B) in the first season Na+ (C), and Cl- (D) in the second season of lettuce plants under NaCl stress. Diverse letters refer to significant variation according to Duncan test. MT, melatonin.
Effect of spraying MT on Na+ (A), and Cl- (B) in the first season Na+ (C), and Cl- (D) in the second season of lettuce plants under NaCl stress. Diverse letters refer to significant variation according to Duncan test. MT, melatonin.

Figure 8.

Effect of spraying MT on POD (A), SOD (B) and GR (C) in the first season and POD (D), SOD (E) and GR (F) in the second season of lettuce plants under NaCl stress. Diverse letters refer to significant variation according to Duncan test. GR, glutathione reductase; MT, melatonin; POD, peroxidase; SOD, superoxide dismutase.
Effect of spraying MT on POD (A), SOD (B) and GR (C) in the first season and POD (D), SOD (E) and GR (F) in the second season of lettuce plants under NaCl stress. Diverse letters refer to significant variation according to Duncan test. GR, glutathione reductase; MT, melatonin; POD, peroxidase; SOD, superoxide dismutase.

Figure 9.

Simplified conclusion for the influence of exogenous MT on growth, RWC, EL and antioxidants enzymes of lettuce grown under NaCl treatments. EL, electrolyte leakage; GR, glutathione reductase; MDA, malondialdehyde; MT, melatonin; POD, peroxidase; RWC, relative water content; SOD, superoxide dismutase.
Simplified conclusion for the influence of exogenous MT on growth, RWC, EL and antioxidants enzymes of lettuce grown under NaCl treatments. EL, electrolyte leakage; GR, glutathione reductase; MDA, malondialdehyde; MT, melatonin; POD, peroxidase; RWC, relative water content; SOD, superoxide dismutase.
Język:
Angielski
Częstotliwość wydawania:
2 razy w roku
Dziedziny czasopisma:
Nauki biologiczne, Nauka o roślinach, Zoologia, Ekologia, Nauki biologiczne, inne
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