Induced resistance to stem rust disease of wheat by antioxidant compounds application [electronic resource].

Includes references.

Stem rust of wheat caused by Puccinia graminis f.sp tritici is a widespread disease in Egypt attacking wheat plants. The effect of spraying four antioxidant compounds i.e., salicylic acid (SA), oxalic acid (OA), ascorbic acid (AA) and citric acid (CA) were studied to evaluate their induction of resistant against P. graminis tritici on wheat plants during 2011- 2012 growing season at seedling and adult stages. The obtained results proved that all the tested compounds were effective in inducing resistance to stem rust disease. Oxalic acid followed by salicylic acid was the most effective at 500 ppm when applied 24 hr., before inoculating the plants. Spraying the tested inducers 72 hr., before inoculation proved to be effective in changing the infection type from susceptible to resistant response as well as reducing pustule size particularly with oxalic acid and salicylic acid at 250 and 500 ppm. However, ascorbic acid and citric acid were inferior in this respect.

Summary in Arabic.

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