EFFECT OF ELECTRIC FIELD TREATMENT OF SUNFLOWER SEEDS ON THE DROUGHT RESISTANCE IN THE GERMINATION STAGE
电场处理油葵种子后对其萌发期抗旱性的影响

After the sunflower seeds were treated with different electric field strength and water stressed with PEG, the effects of electric field on drought resistance of sunflower seeds in the germinat-ing stage were tested. The germination in high osmotic solution, the seed water absorption and the mem-brane lipid peroxidation were determined. The results have shown that different electric field strength has different effects on the water stress adaptability of the seeds in the germinating stage. The electric field treatment can increase seed water absorption rate, germinating energy, germination rate and decrease the damage to the cell membrane of the seeds. It also can enhance the activity of superoxide dismutase and peroxidase and so the accumulation of malon-di-aldehyde in the seeds can be diminished. All these changes were favorable for reducing the damage and strengthening the adaptability of water stress of the seeds.