:: Volume 3, Issue 1 (Journal of Oil Plants Production 2016) ::
3 2016, 3(1): 71-84 Back to browse issues page
Effect of symbiosis of two species mycorrhiza fungi with Sesame (Sesamum indicum L.) genotypes on seed yield, economic and biotic water use efficiency in different levels of drought stress
Esmaeil Gholinezhad *
Department of Agricultural Sciences, Payame Noor University, Tehran, Iran , gholinezhad1358@yahoo.com
Abstract:   (9801 Views)

In order to investigate the effects of mycorrhizal fungi on yield and water use efficiency of eight sesame (Sesamum indicum L.) genotypes in different levels of drought stress, an experiment was conducted using a factorial split plot with three replications in the research field of the Urmia agricultural high school in 2014. The main factor was consisted of different levels of irrigation as: normal irrigation (irrigation after 70 mm evaporation of the crop (ETc), moderate drought stress (irrigation after 90 mm ETc) and severe drought stress (irrigation after 110 mm ETc), and two species of mycorrhiza fungi (Glomus mosseae, Glomus intraradices) and non-inoculated (control). Sub plots consisted of eight landraces of sesame names Jiroft13, Zanjan Tarom Landrace, Moghan Landrace, several branches Naz, TC-25, TS-3, Darab 14 and Dashtestan 5. Results showed that the effect of irrigation, mycorrhiza fungi and genotypes on studying traits was significant. Mean comparisons showed that with increasing severity of drought stress, grain yield, biological yield, water use economic and biotic efficiencies decreased significantly. Severe drought stress reduced water use economic and biotic efficiencies about 62 and 49 percent, respectively. Using two species of mycorrhizal fungi (Glomus mosseae, Glomus intraradices) in comparison with non-inoculated (control) had significant effect on all studied traits. Inoculation with G. mosseae improved seed yield, biological yield and water use economic efficiency compared to control with 33, 42 and 33 percent, respectively. Moghan landrace and Zanjan Tarom landrace based on yield and water use efficiency, had superiority on other landraces. Mycorrhiza led to improve yield of landraces and in severe drought stress conditions, sesame plants showed a higher mycorrhizal dependency.

Keywords: Drought stress, Genotype, Mycorrhizal symbiosis, Oilseed, Water use efficiency
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Type of Study: Research | Subject: Special
Received: 2016/06/17 | Accepted: 2016/09/9 | Published: 2017/01/23

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