AMELIORATIVE EFFECTS OF POTASSIUM ON THE NODULATION, LEGHEMOGLOBIN, AND FLAVONOID OF FABA BEAN (VICIA FABA L.) UNDER SALINITY STRESS

Saaid, Hadjer; Chougui, Saida

AGROBIOLOGIA
Volume 12, Numéro 1, Pages 2969-2976
2022-05-09

Ameliorative Effects Of Potassium On The Nodulation, Leghemoglobin, And Flavonoid Of Faba Bean (vicia Faba L.) Under Salinity Stress

Authors : Saaid Hadjer . Chougui Saida .

Abstract

Description of the subject: High NaCl in soil and water irrigation impair K+ nutrition of plants, it is suggested that K+ deficiency at the cellular level might be a contributory factor to salt-induced oxidative stress and related cell damage. Therefore, improving K+ nutrition of plants under salt stress could be essential to minimizing oxidative cell damage. Objective: The objective of the research was to evaluate the effect of potassium fertilizer on nodulation and some biochemical parameter of broad bean (Vicia faba L. cultivar “Histal”) under salt stress. . Methods: The experiment was conducted under greenhouse, broad bean seedlings were irrigation with NaCl (S0:0, S1:25, S2:50, S3:150 mM), treated with potassium acetate CH3CO2K (A0:0, A1:25, A2:50 mM). After 50 days of growing, we have measured nodulation and some biochemical parameters. Results: The results showed that the application of potassium acetate is removed deleterious effects of salinity more appreciably at 50 mM in salinity levels (25, 50 mM NaCl). As the number of nodules and their dry weight, content of leghemoglobin and flavonoid in roots increased, with reduced accumulation of proline and soluble sugars in roots. Conclusion: The nodulation of broad bean cultivar showed tolerance to salinity within 50 days of growing. The application of potassium acetate in concentration (50 mM) ameliorated the salinity resistance better than concentration (25 mM) during this period