Journal of Plant Pathology & Microbiology

Abstract

Shikimic Acid and Salicylic Acid Induced Protection on Growth Vigor, Seed Yield and Biochemical Aspects of Yielded Seeds of Vicia faba Plants Infected by Botrytis fabae

Heshmat Soliman Aldesuquy

The present work was conducted to evaluate the protective effect of seed presoaking in shikimic acid (0.4 mM), salicylic acid (0.7 mM) or their combination on faba bean plants (Vicia faba L.) variety Giza 429 as alternatives to fungicide Ridomil MZ to increase faba bean resistance against chocolate spot disease. Concerning the growth, the obtained results showed that infection with B. fabae caused noticeable reduction in root and shoot growth vigor (fresh & dry biomasses, length, density, distribution, shoot diameter, R/S ratio, leaf area and number of nodes). On the other hand, exogenous application of shikimic acid, salicylic acid or their interactiom could counteract the adverse effects of B. fabae by improvement growth vigor of root and shoot as well as leaf area. Chocolate spot disease caused marked decreases in all yield components of faba bean plants, total carbohydrates, total nitrogen, total protein and nucleic acid (DNA and RNA) contents of yielded seeds. On the other hand, seed presoaking in phenolic compounds improve the yield components and its biochemical aspects more than the fungicide. It appeared that seed yield was positively correlated with all growth parameters as well as yield attributes and biochemical aspects of yielded seeds of faba bean plants.