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1 Acta Scientiarum Polonorum. Hortorum Cultus

1 2018

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Effect of exogenous salicylic acid on the response of snap bean (Phaseolus vulgaris L.) and Jerusalem artichoke (Helianthus tuberosus L.) to drought stress

100%

El-Tohamy W. A. K. , El-Abagy H. M. , Badr M. A. A. , Gruda N.

nr 4

Water shortage is a major problem that limits growth and productivity of plants in arid and semi-arid regions. Protecting plants from adverse environmental conditions by using simple methods could be of great value under these conditions. In the present study, we examined water status and drought tolerance of snap bean, a drought-sensitive plant, and Jerusalem artichoke, a relatively drought tolerant plant in response to the application of salicylic acid (SA). Different levels of SA were applied and several physiological, growth, productivity and quality parameters were recorded together with the relative water content. Foliar application of SA improved growth, productivity, quality as well as some physiological parameters of snap bean and Jerusalem artichoke plants exposed to drought stress. Total chlorophyll content and relative water content were higher in plants treated with SA compared to control plants when subjected to drought stress. The specific responses of snap bean and Jerusalem artichoke to SA under drought stress as well as the possible explanations of the effects of SA are discussed.