Interactive effects of water stress and gibberellic ai cd on mineral composition of fenugreek plant

12 days-old fenugreek plants were grown in stressed nutrient solutions imposed by NaCl or PEG 4000 to obtain isosmotic solutions of osmotic potentials ranging from 0 to -8 bars. The different stress levels were applied from the onset of germination in treatment I, while in treatment II, the stress levels were applied after 5 days of germination at zero stress level. The interactive effects between GA3, as a presoaking medium, and water stress was also studied. At the lowest osmotic potential, the shoots of salt-stressed plants from both treatments had higher sodium and chloride contents and lower potassium, calcium, magnesium and total phosphorus levels. Such ionic composition was altered in PEG-stressed plants, where the contents of sodium, magnesium and chloride were greatly reduced and balanced by an increase in the level of potassium, calcium and total phosphorus compared with those under saline condition. A similar pattern of ionic changes was demonstrated in GA3-presoaked plants when the external osmotic potential level decreased Na+, K+, Ca2+, Cl- and insoluble phosphorus fraction, it decreases the Mg2+ level under control and each stress condition

Interactive effects of water stress and gibberellic acid on nitrogen content of fenugreek plant

The influence of isosmotic nutrient solutions obtained from NaCl and polyethylene glycol 4000 of osmotic potentials ranging from 0 to -8 bar were tested on the nitrogen contents of 12 day-old fenugreek plants. Such stress levels were applied from the onset of germination in treatment I, and from the time of transplanting in treatment II. The effects of GA3 as a presoaking medium on the nitrogen content of osmotically stressed plants were investigated