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

A. Arafa, M. Khafagy, A. Abo - El Kheer, R. Fouda, M. El-Banna
2014 Journal of Plant Production  
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
more » ... 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.
doi:10.21608/jpp.2014.53877 fatcat:hpndkjpgnra7zbv5szj46o666a