The effect of mycorrhizal symbiosis on the yield and biochemical traits of fenugreek under water deficit stress

In order to investigate the effect of mycorrhizal fungus on the characteristics of herbaceous plant under stressconditions, a factorial experiment was carried out in a randomized complete block design with threereplications at the Agricultural Research Farm of Urmia University in 2012-2013. Irrigation at three levels;irrigation after 50 (control), 100 (medium stress) and 150 mm evaporation from class A evaporation pan(severe stress) as the first factor and association of fungi (control and glomus intraradices) as a second factorwas considered. The results showed that with increasing irrigation levels from 50 to 150 mm (evaporation frompan), seed number per pod, 1000 seed weight and essential oil yield of Fenugreek decreased significantly. Thehighest percentage of essential oil was obtained from 100 mm irrigation water evaporation from the pan. Also,at each level of irrigation (50, 100, 150 mm evaporation), the maximum total chlorophyll content, relativewater content of leaves, biological yield and grain yield of Fenugreek were obtained was obtained fromtreatment of mycorrhizal fungi.