Foliar Application of Salicylic Acid and Methyl Jasmonate on Yield , Yield Components and Chemical Properties of Tomato = تأثير الرش بحمض الساليساليك و ميثيل جاسمونات على الانتاج و مكونات الانتاج و الخصائص الكيماوية للبندورة

2014 ◽  
Vol 10 (4) ◽  
pp. 771-778 ◽  
Author(s):  
Mohsen Kazemi
Plants ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 2066
Author(s):  
Mohammed Mohi-Ud-Din ◽  
Dipa Talukder ◽  
Motiar Rohman ◽  
Jalal Uddin Ahmed ◽  
S. V. Krishna Jagadish ◽  
...  

Drought stress impairs the normal growth and development of plants through various mechanisms including the induction of cellular oxidative stresses. The aim of this study was to evaluate the effect of the exogenous application of methyl jasmonate (MeJA) and salicylic acid (SA) on the growth, physiology, and antioxidant defense system of drought-stressed French bean plants. Application of MeJA (20 μM) or SA (2 mM) alone caused modest reductions in the harmful effects of drought. However, combined application substantially enhanced drought tolerance by improving the physiological activities and antioxidant defense system. The drought-induced generation of O2●− and H2O2, the MDA content, and the LOX activity were significantly lower in leaves when seeds or leaves were pre-treated with a combination of MeJA (10 μM) and SA (1 mM) than with either hormone alone. The combined application of MeJA and SA to drought-stressed plants also significantly increased the activities of the major antioxidant enzymes superoxide dismutase, catalase, peroxidase, glutathione peroxidase, and glutathione-S-transferase as well as the enzymes of the ascorbate–glutathione cycle. Taken together, our results suggest that seed or foliar application of a combination of MeJA and SA restore growth and normal physiological processes by triggering the antioxidant defense system in drought-stressed plants.


2021 ◽  
Vol 52 (4) ◽  
pp. 989-998
Author(s):  
Sh. M. M. Al-Atrushy

THis investigation aimed to study the effect of foliar application with zinc alone or in combination with salicylic acid on vegetative growth, yield, physical and chemical properties of Halawani grapevine cultivar during two successive seasons (2017 and 2018). Zinc was used at concentration of 2 and 4 g.L-1 in a chelated form and salicylic acid at concentration of (50, 100 and 150 mg. L-1) in addition to control treatment for each of them. The result obtained proved that all parameters such as leaf area, total chlorophyll, number and weight of cluster, yield, berries size and weight, as soon as TSS, total sugar, juice percentage and density, β-carotenes, Zn, N. proline content of leaves were increased significantly as compared with control, while total acidity and total phenols were decreased by all treatments as compared with control. Furthermore, combination between high concentration of zinc and salicylic acid improved all parameters in comparison with the control.


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Heba A.A. A. Hegazy ◽  
A. E. Awad ◽  
M. A. I. Abdelkader

In order to amend the harmful effect of soil salinity stress in common sage plants by foliar spray with salicylic acid (SA) and humic acid (HA), two pot experiments were conducted at the Nursery of ornamental plants, Agric. Fac., Zagazig Univ., Sharkia Governorate, Egypt in lath house during the two winter consecutive seasons of 2018/2019 and 2019/2020. The aiming of this work was to investigate the effect of foliar application treatments i.e., sprayed with distilled water (control), 200 ppm salicylic acid (SA), 750 ppm humic acid (HA), 1500 ppm HA, 200 ppm SA+750 ppm HA and 200 ppm SA+1500 ppm HA under various soil salinity levels (0.0, 1000 and 2000 ppm) as well as their combinations on yield components, salt resistance index and volatile oil production as well as some chemical constituents of Salvia officinalis plants. These experiments were arranged in a split-plot design with three replicates. The main plots were occupied by different soil salinity levels and the sub plots were entitled to different salicylic acid and humic acid acids concentrations. The obtained results referred to that herb fresh and dry weights per plant as yield components, volatile oil percentage and volatile oil yield per plant as volatile oil production as well as salt resistance index (%) were recorded. Also, total carbohydrates percentage and total chlorophyll (SPAD unit) in sage leaves was determined. Results showed that using soil salinity levels (1000 and 2000 ppm) significantly decreased yield components, volatile oil yield per plant, total carbohydrates percentage and total chlorophyll content compared to control. In contrast, increasing soil salinity levels gradually increased volatile oil percentage and proline content. In addition, the maximum values of the most of all above mentioned traits were achieved by treating sage plants with 200 ppm SA+1500 ppm HA. Generally, it could conclude that 200 ppm SA+750 or 1500 ppm HA, showed a uniform influence in qualifying of common sage y


10.5219/1131 ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 553-561
Author(s):  
Rabab Maraei ◽  
Noha Eliwa ◽  
Amina Aly

The experiment was conducted during two successive seasons 2016 and 2017 on sweet pepper plants to study the effect of foliar application of some natural extracts (fulvic acid at 2, 4 and 6% or algae at 1, 2 and 4 g.L-1) were applied three times along each season (after 2, 4 and 6 weeks of planting). The influence was evaluated through the response of vegetative growth, and some physical and chemical characteristics of sweet pepper fruits. The results obtained showed that the algae extract at 1 g.L-1 in most cases was better than the other spray treatments investigated to improve most fruit characteristics (length, diameter and yield of fruits), vegetative growth, and chemical properties followed by 6% fulvic acid. With regard to organic acids, malic and citric acids are the main organic acids found in sweet pepper. Malic, succinic and glutaric acids were higher in 1 g.L-1 algae extract treatment, but the concentration of citric acid was higher in 6% fulvic acid treatment. Therefore, algae extract and fulvic acid could be safely recommended as a natural biostimulants application for improving most desirable characteristics of sweet pepper grown under the same experimental condition.


Horticulturae ◽  
2016 ◽  
Vol 3 (1) ◽  
pp. 18 ◽  
Author(s):  
Panida Boonyaritthongchai ◽  
Chalida Chimvaree ◽  
Mantana Buanong ◽  
Apiradee Uthairatanakij ◽  
Pongphen Jitareerat

Horticulturae ◽  
2021 ◽  
Vol 7 (12) ◽  
pp. 568
Author(s):  
Omaima S. Darwish ◽  
Marwa R. Ali ◽  
Ebtihal Khojah ◽  
Bassem N. Samra ◽  
Khaled M. A. Ramadan ◽  
...  

The short shelf-life and loss of bioactive compounds of strawberry fruit are the most important problems during strawberry refrigerated storage. This study was carried out to evaluate the effect of the pre-harvest foliar application of salicylic acid (SA) (2 and 4 mM), abscisic acid (ABA) (0.25 and 0.50 mM), and methyl jasmonate (MeJA) (0.25 and 0.50 mM) three times, 10 d apart, at fruit development and ripening stages on storage ability and bioactive compounds of strawberry fruit (cv. Festival) stored at 4 °C for 12 d. Our results showed that fruit obtained from both concentrations of ABA and 0.25 mM MeJA was firmer and had higher total soluble solids (TSS) than fruit from non-treated plants. However, all previous applications had no significant effect on weight loss, pH, or color. Applications of 4 mM SA and 0.25 mM MeJA conserved fruit from ascorbic acid (AsA) loss compared to control at the end of the storage period. In addition, all pre-harvest applications remained higher in total phenolic compounds (TPC) and anthocyanin contents compared to controls at the last storage period. Hence, the pre-harvest application of SA, ABA, and MeJA could be used to conserve TPC and anthocyanin as well as the quality of strawberry fruits during refrigerated storage.


2021 ◽  
Author(s):  
Zafar Iqbal ◽  
Ravjit Khangura ◽  
Zora Singh ◽  
Saeed Rauf

Abstract Citrus green and blue moulds cause postharvest losses worldwide. Therefore, the potential of preharvest foliar application of salicylic acid (SA) and methyl Jasmonate (MeJ) was investigated to control infection of Penicillium spp. An aqueous solution containing different concentrations of SA (3, 6, 9 mM) or MeJ (3, 4, 5 mM) and ‘Tween 80’ (0.05%) as a surfactant were sprayed onto whole trees seven days before harvest. Among the treatments, the pre-harvest spray of SA (9 mM or MeJ 5 mM) showed good efficacy reducing colony growth, wound rotting (rotting of peel around the wound and spore mass density of Penicillium spp. when compared with control. A pre-harvest spray of SA (9 mM) reduced colony growth by 71.02% and 68.69% on fruit inoculated with P. digitatum and P. italicum, respectively. The activity of fruit softening enzymes markedly increased following fungal infection. The decay in the fruit was found to be associated with the upregulation of activities of exopolygalacturonase (exo-PG), endopolygalacturonase (endo-PG) and Endo-1,4-ß-D-glucanase (e-gase). However, in un-inoculated fruit, negligible enzyme activity was observed. Contrarily the SA-treated fruit showed less activity of exo-PG, endo-PG and e-gase enzymes. These findings clued to develop natural control of Penicillium spp through use of organic elicitors in sweet orange fruit.


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