University of Khartoum

Influence of Two Phenolic Acids on Growth of Two Zea mays L.Cultivars Grown under NaCl Salinity

Influence of Two Phenolic Acids on Growth of Two Zea mays L.Cultivars Grown under NaCl Salinity

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Title: Influence of Two Phenolic Acids on Growth of Two Zea mays L.Cultivars Grown under NaCl Salinity
Author: Abuzid, Shaymaa Tariq Mohammed
Abstract: The present study was conducted to assess whether exogenously applied salicylic acid and benzoic acid (5mM each) as foliar spray could ameliorate the deleterious effects of salt-stress (50mM) on two cultivars of maize (mugtama 45 and giza), and then evaluate germination rate, relative water content, nitrate content, nitrate reductase activity, proteins, soluble sugars, chlorophylls (a and b) and pectic substances. The two cultivars responded more or less similarly to different reliable methods of extraction, and valid spectrophotometric techniques were adopted for estimation of parameters, and results were statistically analyzed. Growth of the two cultivars under saline conditions led to substantial decreases in all the tested parameters except soluble sugars which were markedly enhanced under saline conditions. Foliar spraying of salicylic acid and benzoic acid partially nullified the depressive effects of salinity on all the parameters. However, effectiveness of salicylic acid in alleviating the adverse effects of salinity is more pronounced than benzoic acid. Moreover, the two cultivars responded more or less similarly to salinity and supplements of the two phenolic acids, with a slight tendency of mugtama 45 cultivar to more salt tolerance. Evidently, the drastic effects of salt stress on key physiological and biochemical processes can be partially mitigated by foliar application of salicylic acid and benzoic acid.
Description: 83page
URI: http://khartoumspace.uofk.edu/123456789/26481


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