TY - JFULL AU - Masoud Rafiee and Fatemeh Abdipoor and Hosain Lari PY - 2011/7/ TI - Effect of Drought Stress on Nitrogen Components in Corn T2 - International Journal of Agricultural and Biosystems Engineering SP - 344 EP - 347 VL - 5 SN - 1307-6892 UR - https://publications.waset.org/pdf/11578 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 54, 2011 N2 - An attempt was made to study of nitrogen components response of corn (Zea mays L.) to drought stress. A farm research was done in RCBD as split-plot with four replications in Khorramabad, west Iran. Drought stress levels as irrigation regimes after 75 (control), 100, and 120 (stress) mm cumulative evaporation were in main plots, and four seed corn varieties include 500 (medium maturity), 647, 700, and 704 (long maturity) were as subplots. Soluble protein, nitrate and proline amino acid were measured in shoot and root at flowering stage, and grain yield was measured in harvesting stage. As the drought progressed, the amount of nitrate and proline followed an increasing trend, but soluble protein decreased in shoot and root. The highest amount of nitrate and proline was observed in longer maturity varieties than shorter ones, but decrease yield of long maturity varieties was higher than medium maturity varieties in drought condition, because of long duration of stress. ER -