Effect of foliar application of salicylic acid on the response of tomato plants to oxidative stress and salinity

• Autorzy: Kowalska I. , Smolen S.

Warianty tytułu

PL

Wpływ dolistnej aplikacji kwasu salicylowego na reakcję roślin pomidora na stres oksydacyjny i zasolenia

• Języki publikacji: EN

Abstrakty

EN

The aim of the study has been to evaluate the effect of an increased salt concentration in a nutrient solution and foliar application of salicylic acid and KMnO 4 (the latter causing oxidative stress) on the yield, fruit quality and nutritional status of tomato plants. Salinity stress was stimulated by elevating the electrical conductivity (EC) of a nutrient solution by a proportional increase in the content of all macro- and micronutrients. In 2009- 2010, tomato plants were grown on rockwool, in a heated foil tunnel. The experiment included two sub-blocks with two EC levels (2.5 and 4.5 mS cm –1 ). Within each sub-block, the following foliar application variants were distinguished: 1. control, without foliar application; 2. salicylic acid (SA); 3. SA/KMnO4 . In the SA/KMnO4 combination, solutions of these compounds were applied alternately every 7 days. SA was applied in the concentration of 0.01%, while the concentration of KMnO4 was 0.1%. Foliar treatments were conducted at 7-day intervals from the 3 rd cluster flowering stage until ten days before the first harvesting of fruits. Irrespective of the EC of the nutrient solution, foliar application o SA as well as SA/KMnO4 had no significant effect on the tomato yield, total acidity and dry matter or soluble sugar content in fruits. Neither did it affect significantly the mineral status of plants except for an increase in the Mn level induced by SA/KMnO . A significantly higher content of ascorbic acid together with a decreased content of phenolic compounds and free amino acids resulted from the foliar application of SA and SA/KMnO . Salicylic acid counteracted the oxidative stress caused by KMnO4.

PL

• Wydawca: -
• Czasopismo: Journal of Elementology
• Rocznik: 2013
• Tom: 18
• Numer: 2
• Opis fizyczny: p.239–254,ref.

Twórcy

autor

Kowalska I.

• Chair of Soil Cultivation and Fertilization of Horticultural Plants, University of Agriculture in Krakow, 29 Listopada 54, Krakow, Poland

autor

Smolen S.

• Chair of Soil Cultivation and Fertilization of Horticultural Plants, University of Agriculture in Krakow, Krakow, Poland

Uwagi

PL

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