Back to Contents

FREE FULL TEXT PDF

GROWTH RESPONSE OF VIGNA AMBACENSIS L. I SEEDLING TO THE INTERACTION BETWEEN NITROGEN SOURCE AND SALT STRESS

MOHAMMED N. ALYEMENI

Abstract: Vigna ambacensis plants grown hydroponically in a Hoagland nutrient solution with either nitrate or ammonia as a source of nitrogen and NaCI a 0,40, 80 and 160 mM concentrations showed reduction in all growth parameters where ammonia was used as compared to nitrate as a nitrogen source. Salt decreased the growth of plants. Plants grown in nitrate were more salt tolerant as compared to ammonia especially at 80 and 160 roM NaCilevel. High salinity conditions reduced calcium and potassium contents in shots with a increase in sodium which was higher (80 m µl) in NH⁺₄-N as compared with NO^-1 ₃-N source.

Department of Botany and Microbiology, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia.