Salt stress effect on wheat (Triticum aestivum L.) growth and leaf ion concentrations
محل انتشار: مجله تولید گیاهان، دوره: 6، شماره: 2
سال انتشار: 1391
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 302
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شناسه ملی سند علمی:
JR_IJPPG-6-2_005
تاریخ نمایه سازی: 17 مهر 1398
چکیده مقاله:
Crops growing in salt-affected soils may suffer from physiological droughtstress, ion toxicity, and mineral deficiency which then lead to reduced growth andproductivity. A pot experiment was conducted to study the effect of differentsalinity levels, i.e. ECe=3 dS m-1 (control), 8, 12 and 16 dS m-1 on wheat grainyield, yield components and leaf ion uptake. Desired salinity levels were obtainedby mixing adequate NaCl before filling the pots. Soil water was maintained at 70%of available water holding capacity. Results revealed that Kouhdasht and Tajanshowed highest and lowest grain yield and yield compomnents as compared toothers. Leaf Na+ and Cl- concentrations of all genotypes increased significantlywith increasing soil salinity, with the highest concentrations in Tajan, followed byRasoul, Atrak and Kouhdasht. Highest leaf K+ concentration and K+: Na+ ratiowere observed in Kouhdasht, followed by Atrak, Rasoul and Tajan, respectively.Based on higher grain yield production, higher leaf K+ concentration, K+: Na+ ratioand lower leaf Na+ and Cl- concentrations, Kouhdasht and Atrak were identified asthe most salt-tolerant genotypes.
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نویسندگان
H.R. Asgari
Dept. Desert Management, Gorgan University of Agricultural Sciences and Natural Resources, Iran.
W. Cornelis
Dept. Soil management, Ghent University, Belgium.
P. Van Damme
Dept. Plant Production, Ghent University, Belgium.