عنوان	Grain yield and quality of wheat are improved through post-flowering foliar application of zinc and 6benzylaminopurine under water deficit condition
نوع پژوهش	مقاله چاپ‌شده در مجلات علمی
کلیدواژه‌ها	drought stress, Zn, cytokinin, TaCKX, yield, wheat, phytic acid
چکیده	Introduction: Zinc (Zn) as an essential micronutrient and cytokinin as phytohormone not only regulate ‎plant growth but also play fundamental roles in plant tolerance against drought stress. Understating ‎the function and the role of cytokinin in combined with an essential micronutrient, Zn, could improve ‎the choice of a sustainable strategy for improvement of plant drought stress. The objective of this field ‎research was to determine the effect of postflowering foliar application of ZnSO4 and 6-‎benzylaminopurine (6-BAP) on grain yield and quality of winter wheat under water deficit condition. ‎Methods: Experiments were conducted under filed condition. Drought was imposed by with holding ‎irrigation at the beginning of flowering till the signs of temporary wilting/leaf rolling appeared, after ‎which all plots were irrigated to field capacity. The foliar treatment consisted of (1) foliar application of ‎water, as control treatment; (2) foliar application of 10 g ha-1 6-BAP; (3) Foliar application of 20 g ha-1 ‎‎6-BAP; (4) Foliar application of 10 g ha-1 6-BAP plus foliar application of 6 kg ha-1 ZnSO4 solution and (5) ‎foliar application of 10 g ha- 1 6-BAP plus foliar application of 6 kg ha-1 ZnSO4 solution 2 days before ‎drought imposition. Data were collected on grain and straw yield, yield attributes, harvest index, flag ‎leaf fresh matter and dry matter weight, TaCKX6-D1 expression, phytic acid content in grains, ‎mycorrhiza colonization rate and succinate dehydrogenase (SD) activity. Results: According to ANOVA, ‎the factor ‘Zn’ significantly affected leaf relative water content (p < 0.001). Relative water content for ‎plants foliar applied with 6-BAP was not statistically significant.
پژوهشگران	محمدجواد زارع (نفر اول)، نسرین کریمی (نفر دوم)