Effects of Foliar Rates of Methanol Applications on some of Traits Related to Seed Yield of Sunflower (Helianthus annuus L.) under Water Deficit Stress

To investigate the effects of rates of methanol foliar applications under water deficit stress on someof traits related to seed yield of sunflower (Helianthus annuus L), a split plot experiment was conducted during growing seasons of 2011-2012. Treatments were four levels of water deficit stresses a1: severe stress (irrigation at 25% FC), a2: mild stress (irrigation at 50% FC), a3: fair stress (irrigation at 75% FC) and a4: normal irrigation (irrigation at 100% FC) and six levels of foliar methanol applications [b1:0, b2:7, b3:14, b4:21, b5:28 and b6:35 (v/v)]. The analysis of variance showed significant effect of interaction between water deficit stress and methanol rates of foliar applications on seed yield per plant, dry weight per plant, number of seeds per head (p