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Plant Pathology Journal
Year: 2016  |  Volume: 15  |  Issue: 2  |  Page No.: 17 - 26

Hydrogen Peroxide and Acetylsalicylic Acid Induce the Defense of Lupine Against Root Rot Disease

K.M. Abd El-Hai, M.A. El-Metwally and Naglaa T. Mohamed    

Abstract: Isolation of pathogenic fungi from both cultivars of diseased lupine was carried out in five districts of Dakahlia governorate. The high frequency isolated fungi presented in Temi El-Amdeed followed by Bani-Ebeed district. Fusarium solani and F. oxysporum proved to be the most dominate isolated followed by Rhizoctonia solani . In greenhouse, Giza 1 was high susceptible cultivar for infected with root rot pathogenic fungi. Sclerotium rolfsii followed by R. solani then F. solani were the most aggressive damping-off disease. In the field experiment, Giza 2 cultivar was the best in germination% and more tolerant of damping-off than Giza 1. The application of Rhizolex-T50 followed by H2O2 at low concentrate (0.50 mM) showed a highest percentage of germination within lowest percentage of damping-off. With considerable that, no significant differences between Rhizolex-T50 and low concentrate of H2O2. The high photosynthetic pigments and phenolic content were obtained from the application of acetylsalicylic acid (ASA) at moderate concentrate (15 mM) in both cultivars. Giza 2 gave the highest values in these parameters. Soaking both cultivars of lupine seeds in both tested materials increased significantly growth parameter, yield components and seed quality. The moderate concentration of ASA (15 mM) was the most effective followed by the low concentration of H2O2 (0.50 mM). The data suggested that the application of H2O2 at 0.50 mM and ASA at 15 mM as seed soaking could be considered as fungicide alternatives for controlling lupine root rot disease as well as improve growth and productivity.

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