Some physio-biochemical traits of sunflower (<em>Helianthus annuus</em> L.) as affected by arbuscular mycorrhizal fungi inoculation under different irrigation treatments

Plant-arbuscular mycorrhizal (AM) fungi association is one of the oldest symbiotic relationships between organisms. This relationship may be more important under stress conditions such as drought and can help host plant tolerate drought. study was conducted in 2016 2017 at Agricultural Research Farm Razi University, Kermanshah, Iran to evaluate effect AM (AMF) inoculation (with either Funneliformis mosseae or Rhizophagus intraradices) on some physio-biochemical traits three sunflower cultivars different soil irrigation treatments (severe water deficit stress, mild well-watered). In both years, significantly reduced leaf relative content (RWC), chlorophyll concentrations (a, b total) shoot phosphorus concentration (SPC) while simultaneously increasing proline levels malondialdehyde (MDA) concentrations. AMF had positive effects RWC, SPC irrespective cultivar treatment. Shoot MDA than non-AM plants. most cases F. performed better R. intraradices terms performance. Moreover, improvements caused by were evident well-watered condition. It concluded that alleviate negative grown field, considered a practical economical approach improve crop performance environments exposed limitations.