الفهرس 
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Abstract
The investigation was undertaken to investigate the possible role displayed by some phenolic compounds [i.e, shikimic acid, salicylic acid or their combination] in regulating growth, metabolism and productivity of faba bean plants infected by Botrytis fabae. The results obtained from this investigation were recorded that infection with B. fabae caused noticeable reduction in growth and physiological criteria of Vicia faba. Also, electron microscopic examination of mesophyll cells of faba bean leaves revealed that infection with B. fabae led to many considerable changes in these cells, on contrast, the exogenous application of shikimic acid, salicylic acid or their interaction enhanced the ultrastructure characteristics of these cells. Moreover, B. fabae infection caused noticeable increase in the activity of defense enzymes in infected faba bean plants and the applied phenolic compounds induced significant increase in such enzymes than that sprayed with fungicide and this increment was concomitant with the increase in the endogenous total phenols, shikimic acid and salicylic acid content. Also, infection caused a massive increase in ABA content in faba bean plant accompanied by decrease in the growth promoters and all yield components and biochemical aspects of yielded seeds, While, application of phenolic compounds appeared to alleviate this adverse effect by decreasing ABA content and increasing the growth promotors content.