首页|CO2 enrichment changed N metabolism of tomatoes under salinity stress
CO2 enrichment changed N metabolism of tomatoes under salinity stress
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NSTL
Elsevier
? 2022Salinity is a worldwide concern. The effects of CO2 enrichment and N sources under salinity on the vegetative, photosynthetic, and biochemical parameters of tomato was explored. The tomato plants are cultivated in two climate-controlled greenhouses with two CO2 levels: 300 (C1) and 700 (C2) ppm. Five NO3:NH4 ratios (25/75(N1), 50/50(N2), 75/25(N3), and 100/0 (N4)) were used to fertilize plants in two salinity conditions (0 (S1) and 50 mM (S2)). When NH4 was raised, vegetative, yield and biochemical characteristics were seen to decline. By increasing nitrate, yield, and desirable tomato characteristics such as fresh weight of shoot, root, and fruit, dry weight of shoot and fruit, and the number of fruits per plant, photosynthesis, and water content of shoot were enhanced. Increased CO2 mitigated the detrimental effects of salt stress. By increasing the nitrate in the ratio of NO3:NH4, notably in the S2N4 treatment, the rate of decrease of vegetative characteristics caused by salinity stress was greatly slowed. Under the detrimental influence of salinity stress, photosynthesis and transpiration improved in NO3:NH4, 50/50 (S2N2 treatment). In general, when the amount of ammonium was greater than nitrate (NO3:NH4 ratio of 25/75) in both saline and non-saline conditions, the examined attributes did not demonstrate a favorable influence on all features.
CO2 enrichmentNitrateProteinSalinity stressTomato
Golabdar S.、Abolghasemi R.、Kappel N.、Haghighi M.
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Department of Horticulture College of Agriculture Isfahan University of Technology
Department of Vegetable and Mushroom Growing Hungarian University of Agriculture and Life Sciences
NSTL
Elsevier
