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Investigating the Effect of Potassium Phosphite on Morphological Characteristics and the Absorption of Elements in Sour Orange (Citrus aurantium L.) under Salinity Stress
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Sara Atrash   , Mansoore Shamili , Abdolmajid Mirzaalian Dastjerdi , Azadeh Goudarzi , Abdoolnabi Bagheri |
| Horticultural sciences, University of Hormozgan |
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Abstract: (1009 Views) |
Sour orange, among the cold, drought tolerant rootstocks, is suitable for planting in poor drainage soils. Since salinity is one of the destructive stresses on the growth of citrus plants, providing a suitable solution can be effective in reducing its harmful effects. So, a factorial pot research as a completely randomized design with three replications was conducted to evaluate the impact of saline water and potassium phosphite on sour orange plant. Sour orange plants were healthy and free disease six-months seedlings (height about 60 cm). The treatments were included salinity (1.5, 3, 4.5 and 6 dS/m) and potassium phosphite (0, 1.5 and 3 g L-1). The results showed that the high level of salinity led to a decrease in stem fresh and dry weight (63 and 60.22%, respectively), nitrogen, potassium, phosphorus, calcium and iron contents (4, 15.7, 8, 18.6 and 12.2 %, respectively) in sour orange. Potassium phosphite treatment (1.5 g L-1) increased the potassium, phosphorus, nitrogen, iron (32.6, 20.6, 19.7, 46.5%, respectively) contents, the fresh and dry weight of the stem (63.9 and 60.2%, respectively), the fresh and dry weight of roots (58.18 and 61.01 %, respectively) and finally the harmful impacts of salinity stress were reduced in sour orange plant. Generally, the application of potassium phosphite (1.5 g L-1) improved morphological characteristics, absorption of elements and reduced the adverse effects of salinity in Sour orange. |
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| Keywords: Dry weight, Fresh weight, Macro elements, Micro elements, Salt Stress |
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Full-Text [PDF 684 kb]
(156 Downloads)
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Type of Study: Research |
Subject:
Environmental stresses
Received: 2023/07/21 | Accepted: 2023/08/23 | Published: 2024/03/10
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