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MAHLOOJ, MEHRDAD, PESSARAKLI, MOHAMMAD. (1396). Agrophysiological Responses of Barley Cultivars to Salt Stress and Zinc Fertilization. نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 12(2), 113-128. doi: 10.30486/roce.2017.676042
MEHRDAD MAHLOOJ; MOHAMMAD PESSARAKLI. "Agrophysiological Responses of Barley Cultivars to Salt Stress and Zinc Fertilization". نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 12, 2, 1396, 113-128. doi: 10.30486/roce.2017.676042
MAHLOOJ, MEHRDAD, PESSARAKLI, MOHAMMAD. (1396). 'Agrophysiological Responses of Barley Cultivars to Salt Stress and Zinc Fertilization', نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 12(2), pp. 113-128. doi: 10.30486/roce.2017.676042
MAHLOOJ, MEHRDAD, PESSARAKLI, MOHAMMAD. Agrophysiological Responses of Barley Cultivars to Salt Stress and Zinc Fertilization. نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 1396; 12(2): 113-128. doi: 10.30486/roce.2017.676042

Agrophysiological Responses of Barley Cultivars to Salt Stress and Zinc Fertilization

Research On Crop Ecophysiology
دوره 12، شماره 2، شهریور 2017، صفحه 113-128    اصل مقاله (452.8 K)
شناسه دیجیتال (DOI): 10.30486/roce.2017.676042
نویسندگان
MEHRDAD MAHLOOJ1؛ MOHAMMAD PESSARAKLI2
1Horticulture Crops Research Department, Isfahan Agricultural and Natural Resources Research and Education Center, AREEO, Isfahan, Iran.
2School of Plant Sciences, College of Agriculture & Life Sciences, The University of Arizona, Tucson, AZ 85721, USA.
چکیده
Abstract
 In order to study the effects of agrophysiological responses of barley genotypes to salt stress and zinc fertilization, a field experiment was conducted in a strip-split-plot design with three replications. Saline irrigation water in three levels [2 (low), 10 (moderate) and 18 (high) dS m-1] were applied as vertical factors. Three barley genotypes [‘Morocco’ (salt-sensitive), ‘Nosrat’ (semi salt-tolerant) and ‘Khatam’ (salt-tolerant)] were arranged within the vertical factors. The horizontal factors were four zinc fertilizer applications [Nano-ZnO, Zn-EDTA, simultaneous applications of Nano-ZnO + Zn-EDTA, and water (control)]. With increasing  salinity, maximal efficiency of PSII (Fv/Fm), chlorophyll content (SPAD), relative water content (RWC), K+ ion, K+:Na+ ratio, number of spike (NS), kernel number per spike (KNS), thousand-kernel weight (TKW), and grain yield (GY) decreased, but electrolyte leakage (EL) and Na+ ion concentration increased. The tolerant genotype (Khatam) had maximum Fv/Fm, SPAD, RWC, K+ ion, K+:Na+ ratio, KNS and GY. Minus zinc application (check) had minimum Fv/Fm, SPAD, K+:Na+  ratio and GY. Nano-ZnO had the highest EL and the lowest KNS, K+ and Na+ ions. Zn-EDTA application provided the highest RWC, K+ ion, K+:Na+ ratio, KNS and GY. Overall, it was concluded that Zn-EDTA can be as a proper toolfor increasing barely yield under salinity stress conditions. 
KeyWords: Barley, Salinity stress, Yield, Zinc applications.
کلیدواژه‌ها
KeyWords: Barley؛ Salinity stress؛ Yield؛ Zinc applications
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