Effect of drought conditions and mycorrhiza on yield components and enzime activity of safflower (Carthamus tinctorius. L)

In order to study the Effect of mycorrhiza on yield and yield components of Safflower under drought stress an experiment in split plot based on complete block design with three replications in 1392 in Varamin region was done. treatments were first factor drought in four irrigation regimes including 50 (Control), 90, and 130 mm evaporation from evaporation pan (Class A) and the second factor consisted of four levels of mycorrhiza (Control, 100, 200 and 300 mg) respectively. Results showed a significant effect of mycorrhiza on oil percentage and catalase, glutathione enzymes. Effect of drought stress on catalase, glutathione, superoxide dismutase enzymes and proline and protein and oil percentage was significant. Interactions between drought stress and mycorrhiza was significant and The Best Results in normal irrigation (control) and 200 mg treatment was observed. The highest oil content in the seed inoculation with mycorrhizal fungi 200 mg (B3) and control (B1), respectively, with an average of 28.11 and 23.44 per cent respectively. The highest and lowest catalase activity in the treatment of 130 mm evaporation Class A3 (severe stress) and 50 mm evaporation Class A1 (conventional irrigation), respectively, 16.6 and 9.7 mg protein per minute Was obtained. Most of the glutathione peroxidase activity in the treatment of severe drought stress (4.8 mg protein per minute) and the lowest in the treatment of stress (9.4 mg protein per min).