MINERAL CONTENT IN THE LEAVES OF SWEET PEPPER PLANT IN RESPONSE TO CERTAIN BIO-STIMULANTS UNDER SALT STRESS CONDITIONS

Arafa, A. A.; Khafagy, M. A.; Abo - El Kheer, A. M.; Fouda, R. A.; El-Banna, M. F.

doi:10.21608/jpp.2014.53877

MINERAL CONTENT IN THE LEAVES OF SWEET PEPPER PLANT IN RESPONSE TO CERTAIN BIO-STIMULANTS UNDER SALT STRESS CONDITIONS

Document Type : Original Article

Authors

Dept. Agric. Bot., Fac. of Agric., Mansoura Univ., Egypt

10.21608/jpp.2014.53877

Abstract

N, P, K+ and Mg₂+ concentration as well as K+/Na+ ratio in sweet pepper root, shoot, and fruits were significantly increased at the low salinity level NaCl+CaCl₂(2000 mg/L) followed by CaCl₂. In addition, increasing salinity levels led to a decrease in this respect. Meanwhile, CaCl₂ or NaCl+CaCl₂ increased significantly the Ca₂+ concentration with increasing salinity levels from 2000 to 4000 mg/L as compared to control. On the other hand, calcium concentration was decreased significantly with increasing NaCl salinity level to 4000 mg/L.
With increasing salinity levels, both Na+ and Cl- concentration were increased as compared with control. The highest value of Na+ was obtained by NaCl followed by NaCl+CaCl₂. In addition, pre-soaking seeds in SA, AsA, α-tocopherol and yeast extract at both levels significantly increased N, P, K+, Ca₂+ and Mg₂+ concentrations as well as K+/Na+ ratio whereas decreased Na+ and Cl- under non-saline and saline conditions. In addition, AsA at 50 mg/L and SA at 75 mg/L were more effective as compared with the other treatments.