نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی دکتری زراعت، گروه اکوفیزیولوژی گیاهی، دانشگده کشاورزی، دانشگاه تبریز
2 استاد گروه اکوفیزیولوژی گیاهی، دانشکده کشاورزی، دانشگاه تبریز
3 دانشیار گروه اکوفیزیولوژی گیاهی، دانشکده کشاورزی، دانشگاه تبریز
4 استاد گروه اکوفیزیولوژی گیاهی دانشکده کشاورزی دانشگاه تبریز
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Background and Objective: This study evaluated the root system characteristics of different wheat species under magnetized water and salinity stress.
Materials and Methods: The experiment was conducted as a factorial based on a randomized complete block design with three replications in 2019 at the Research Farm of the Faculty of Agriculture, University of Tabriz. The factors included magnetized water (0 and 400 milliTesla), salinity levels of irrigation water (Control (distilled water), 3 and 6 dS/m (NaCl)), and wheat species and cultivars.
Results: Under moderate and severe salinities, mean shoot biomass, crown diameter, root dry weight, root volume, K+ concentration, and the K+/Na+ ratio in roots and shoots decreased, while root area, cumulative root length, and Na+ concentration in roots and shoots significantly increased. Magnetized water mitigated salinity stress by increasing crown diameter (14.8%), root dry weight (56.4%), rooting depth (34.6%), root volume (approximately 2-fold), root surface area (67.2%), cumulative root length (75.1%), and root-to-shoot ratio (30.1%). It also enhanced K+ concentration (by 14.9% and 8.2%, respectively) and the K+/Na+ ratio (by 20.5% and 13.1%, respectively) in roots and shoots while reducing Na+ concentration in roots and shoots (by 7.9% and 9.8%, respectively). Mean measured traits showed the superiority of Kohdasht and Chamran cultivars over other wheat species across salinity levels.
Conclusion: Based on the results obtained, the application of magnetized water and suitable wheat cultivars such as Kohdasht and Chamran improves root growth under both non-saline and saline conditions.
کلیدواژهها [English]
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