Volume 20, Issue 7 (2018)                   JAST 2018, 20(7): 1467-1477 | Back to browse issues page

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Safar-Noori M, Dong Q, Saneoka H. Improvement of Grain Yield, Nutritional and Antinutritional Quality, and Seed Physiological Performance of Wheat by NPK Fertilization. JAST. 2018; 20 (7) :1467-1477
URL: http://journals.modares.ac.ir/article-23-17204-en.html
1- Graduate School of Biosphere Science, Hiroshima University, Higashi-Hiroshima, 739-8528, Japan.
Abstract:   (726 Views)
 The present research was conducted to study the effect of NPK fertilization on wheat grain yield, minerals concentration, grain quality, gluten, pentosan, and phytate phosphorous (phy-P) content, and the influence of maternal plant NPK fertilization on the seed physiological attributes during the germination period. NPK treatments comprised a control, where no fertilizer was applied (T0), and two levels of NPK fertilizer: T(110 kg N+60 kg P2O5+55 kg K2O ha-1), and T2 (200 kg N+120 kg P2O5+100 kg K2O ha-1). Winter wheat was grown in a greenhouse during the growing season of 2015-16, following randomized complete block design with 4 replicates. The results indicated that a high level of NPK (T2) fertilization increased the grain yield, crude protein, water-soluble pentosan, and dry gluten, up to 151.6, 65.3, 40.5, and 408.9% compared to the control, respectively. It also enhanced the grain mineral concentration, but did not affect the grain starch significantly. Grain phy-P was increased with a high NPK fertilization and, interestingly, the level of phytase enzyme was also increased up to 46% in T2 compared to the control. Moreover, maternal plant NPK fertilization enhanced seed germination percentage, seedling fresh weight, phytase activity, inorganic phosphorus, and phy-P metabolism during the germination period. From the results of this study, it was concluded that grain nutritional quality was improved with increasing NPK rates, but antinutritional compound phy-P was also increased, while it may enhance seed viability, germination, and seedling vigor.
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Article Type: Research Paper |
Received: 2017/04/3 | Accepted: 2018/08/28 | Published: 2018/12/8

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