Abstract: The cucumber seeding were irrigated with parasley seed extracts in order to investigated the physiological mechanism for resistance of Cucumber Fusarinm Wilt.the extracts obtained from the parasley seed with distilled water, ethanol and acetone as the extractant.Cucumber seedlings were irrigated(twice time)with the three kinds of the extracts at the stage of 5 cm width of the first true 1eaf.Than the content of MDA.Electrolyte Leakage Rate.the con. tent of soluble sugar and the content of soluble protein in the cucumber lear at difierent times were determined.The results showed that the content of MDA, Electrolyte Leakage Rate was lower than that of the control at the different time.The content of MDA in the cucumber leat"were lower than the control from 8.65%to 23.89%, 0.68%to 13.89%。7.50%to 21.69%irrigated with distilled water extracts, ethanol extracts and acetone extracts, Electrolyte Leakage Rate were lower than the control from 0.62%to 9.47%。0.40%to 11.35%.1.86%to 19.80%irrigated with distilled water extracts.ethan01 extracts and acetone extracts.The content of soluble sugar。soluble protein were higher than that of the control at the different time.The content of soluble sugar were higher than that of the control from 12.21%to 41.50%irrigated with distilled water extracts：6.28%to 62.25%deal with ethanol extracts；23.43% to 54.38%irrigated with acetone extracts；The content of soluble protein were higher than the control from 0.08%to 25.87%irrigated with distilled water extracts；0.93%to 23.08%irrigated with ethanol extracts；2.20%to 37.67% irrigated with acetone extracts；The variation of acetone extracts treatment was the greater than ethanol extracts, ethanol extracts treatment than distilled water extracts.

Key words: xtracts of parsley seed, Fusarium oxysporium f sp.cucumeris, Allelopathy mechanism, Cucumber leaf, Physiology changes

CLC Number: 

• S436.421