Effect of ABA foliation on antioxidant enzymes activity in two varities of sunflower under salinity stress

Subject Areas : agronomy

Received: 2011-04-21 Accepted : 2011-07-28 Published : 2015-10-23

Keywords: Sunflower, Photosynthesis, : salt stress, ABA foliation,

Abstract :

In this experiment response of ion concentration in leaf and root in two sunflower Varities (salt tolerance:Azargol and salt sensitive :Mehr) under two salinity levels (0 and 8ds/m) to ABA Foliation (0, 10 and 20 micro mol/l) were investigated using a factorial split design in 3 replication. Results showed salt stress decrease photosynthesis and catalase activity but increase leaf electrical leakage peroxidase activity.In Mehr varite, ABA foliation increased photosynthesis and catalase and peroxidase activity under salinity condition but decreased leaf electrical leakage. In fact ABA Foliation, improved photosynthesis in Mehr varite but could not improved photosynthesis condition in Azargol varite.

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