Peg- Induced Drought Stress Effects on Spinach Germination Parameters

Exposure to the drought stress reduces germination rate and seedling's growth with significant variations from crop crop. An unavoidable consequence of exposure is generation reactive oxygen species. They can be extremely several cellular constituents such as proteins, lipids, nucleic acids. Spinach (Spinacia oleracea L.) one most consumed vegetable species, rich in vitamins, vitamin C, minerals, which are essential for human health. Besides, spinach contains large amounts bioactive molecules glucuronic acid derivatives flavonoids p-coumaric that exhibit strong antioxidant activity Osmotic solutions polyethylene glycol (PEG) commonly used control water potential seed studies. PEG osmotic but may limit availability germinating seeds. The purpose this study was determine whether immersion solution had a detrimental effect on total Germination percentage, Relativized Mean time, rate, Coefficient variation velocity germination, index, Uncertainty process, Synchronization Time 10% 25% 50% 75% 90% 10 25 daily Percent, Peak value value. A controlled experiment conducted investigate effects stress, induced by PEG, these parameters Spinach. For control, seeds were treated nutrient solution, 2.5% induce stress. germinated geotropically between moisten filter papers. Each roll contained 30 Overall showed decrease compared control. percentage L. 79% while those only 63%. Similarly, relativized observed case PEG-treated 91% 73%. Both