Y. Habibzadeh, M. R. Zardoshti, A. Pirzad, J. Jalilian,
Volume 16, Issue 60 (7-2012)
Abstract
To evaluate effect of different irrigation regimes and mycorrhizal fungi on the growth and yield of mungbean NM92 [Vigna radiata (L.) Wilczk], a field experiment was conducted in split plot arrangements using randomized complete block design (Irrigation after 50, 100, 150 and 200 mm evaporation from pan class A as main plots and mycorrhiza species, Glomus mosseae, G. intraradices and a non-inoculated treatment as sub-plots) with three replications at the Research field of Urmia university in 2009. Results showed that irrigation after 50mm evaporation from pan class A, and plant inoculated with G. intraradices produced the highest grain yield (1678.5 kg/ha and 1537.6 kg/ha, respectively), total dry weight, leaf dry weight, leaf area index, crop growth rate, relative growth rate and net assimilation rate. In Contrast, irrigation after 200 mm evaporation from class A pan and non-inoculated treatment produced the lowest grain yeild (1159.2 and 1301.9 kg/ha, respectively). Reducing the irrigation distance led to an increase in total dry weight, leaf dry weight, leaf area index, crop growth rate, relative growth rate and net assimilation rate. Despite lower grain yield in water deficit condition, AM fungi inoculation significantly reduced the effect of stress on grain yield. All inall, both mycorrhizae species significantly (P 0.05) increased the grain yield of mungbean under well-watered and water deficit conditions
M. Rishcefid, N. Aliasgharzad, M. R. Neyshabouri,
Volume 21, Issue 1 (6-2017)
Abstract
Glomalin is a glycoprotein identified in and extracted from cell walls of hyphae and spores of Glomeral fungi. It deposites on soil particles and acts as a glue which leads to the formation and stabilization of soil aggregates. Water deficit stress by affecting mycorrizal symbiosis can alter glomalin production. This study was conducted as a factorial experiment arranged in a completely randomized design (CRD) with four replications using corn (Zea mays L. Single cross 704) under greenhouse conditions. The first factor was three levels of soil moisture including 10-30% (W0), 35-55% (W1), 60-90% depletion of available water (W2) and the second factor was three species of mycorrhizal fungi, Glomus versiforme (Gv), Glomus intraradices (Gi), Glomus etunicatum (Ge) and non mycorrhizal control (NM). At the end of vegetative growth, easily extractable glomalin (EEG) and total glomalin (TG) were measured using the Bradford method after extraction from soil. Shoot and root dry weights and root colonization decreased by declining soil moisture level. Water deficit significantly increased the amount of EEG and TG in soil. Also, a significant increase in glomalin production was observed at W2 level in all three fungal species compared to the W0 and W1 moisture levels. Moreover, by enhancing water deficit stress and decreasing root colonization, glomalin production per unit percent of root colonization was significantly increased.
S. Abdi, A. Pirzad,
Volume 23, Issue 1 (6-2019)
Abstract
Water stress is one of the most important factors limiting the growth and production of crops in arid and semi-arid regions. To evaluate the effect of mycorrhizal fungi species on the growth and yield (quantity and quality) of Onobrychis sativa under water deficit condition, a greenhouse factorial experiment based on completely randomized design (CRD) with three replications was conducted in 2014. Treatments included five species of mycorrhizal fungi (Fanelormis mosseae, Rhizophagus intraradices, Claroideoglomus claroideum, Funneliformis caledonius, Glomus versiforme and non-mycorrhizal control) and two levels of irrigation (irrigation at 80% [well watering] and 50% [water deficit] field capacity [FC]). The highest grain yield (9.187 g/plant) was obtained from the stressed plants inoculated with Rh. intraradices with the same grain yield of F. mosseae inoculated plants (8.867 g/plant). With a significant reduction in the grain yield of stressed plants, mycorrhizal relationships even increased the yield more than the well-watered plants. Despite the decreases in the grain protein and phosphorous of water-deficit stressed mycorrhizal plants, the highest grain protein content was obtained from the plants inoculated with G. versiforme, and the highest grain phosphorus content was obtained from the plants inoculated with F. mosseae. Mycorrhizal symbiosis enhanced the yield and the quality of Sanfoin grain in water deficit stressed plants due to reducing root volume against the stimulating root elongation. In this way, the species G. versiforme exhibited the greatest positive effect.
