Evaluation of Exogenous Salicylic Acid Application on White Mould Disease (Sclerotinia sclerotiorum) and Photosynthetic Pigments in Lettuce (Lactuca sativa L.)

Authors : Nuray AKBUDAK, Ozan ZAMBİ, Ufuk Tan DURAN

Pages : 90-96

Doi:10.19159/tutad.1056333

View : 21 | Download : 7

Publication Date : 2022-02-28

Article Type : Research Paper

Abstract :The aim of this study was to investigate the effectiveness of salicylic acid insert ignore into journalissuearticles values(SA); treatment against white mould disease insert ignore into journalissuearticles values(Sclerotinia sclerotiorum); insert ignore into journalissuearticles values(SS); disease in lettuce insert ignore into journalissuearticles values(Lactuca sativa L.); plant. In this study, two lettuce cultivars insert ignore into journalissuearticles values(Melina and Fuzila); were used and four treatments were applied to the plants insert ignore into journalissuearticles values(control, SS, SA, and +SA+SS treatments);. Weight insert ignore into journalissuearticles values(g);, the number of marketable leaf per plant, the number of non-marketable leaf per plant, leaf ratio insert ignore into journalissuearticles values(%);, relative water content insert ignore into journalissuearticles values(%);, chlorophyll parameters insert ignore into journalissuearticles values(chlorophyll a, b and total chlorophyll insert ignore into journalissuearticles values(mg 100g-1);, colour parameters insert ignore into journalissuearticles values(L, a and b); and disease severity insert ignore into journalissuearticles values(%); were determined. According to the results, SA treatment increased the weight insert ignore into journalissuearticles values(563.65 g plant-1 for cv. Melina and 574.67 g plant-1 for cv. Fuzila); and number of marketable leaves insert ignore into journalissuearticles values(26.83 leaf per plant for cv. Melina and 31.33 leaf per plant for cv. Fuzila); whereas it decreased the number of non-marketable leaves insert ignore into journalissuearticles values(8.66 leaf per plant for cv. Melina and 6.67 leaf per plant for cv. Fuzila); in both cultivars. Besides, it was found that SA treatment reduced disease severity by 19% and 14% for cv. Melina and cv. Fuzila, respectively. Total chlorophyll contents ranged from 0.421 mg 100g-1 to 0.484 mg 100g-1 for Melina and 0.467 mg 100g-1 to 0.593 mg 100g-1 for Fuzila cvs. These results demonstrated that there was an increasing tendency due to SA applications for the total chlorophyll content in all cultivars. Consequently, it has been determined that SA treatment is effective and can be used against white mold disease in lettuce plants.
Keywords : Disease severity, Lactuca sativa, marketable yield, salicylic acid, Sclerotinia sclerotiorum, quality