Document Type : Research Paper
Authors
1 M.Sc. Student, Department of Agronomy and Plant Breeding, Shahid Chamran University, Iran
2 Professor, Department of Agronomy and Plant Breeding, Shahid Chamran University, Iran
3 . Assistant Professor, Department of Agronomy and Plant Breeding, Shahid Chamran University, Iran
Abstract
Side transportation of storage carbohydrates is one of the most important physiological indices in yield formation. In order to study potassium variation levels (200, 300 and 400 mg kg-1) on side transportation and soluble carbohydrate contents in two wheat cultivars with different maturity period (Veerynak and Chamran as early and medium maturity types, respectively), a pot experiment was carried out in the glasshouse using a factorial experiment based on a randomized complete block design with three replications in Shahid Chamran University of Ahvaz. The stem soluble carbohydrate in both cultivars was higher at 300 mg kg-1 from flowering to maturity stages at this potassium level. Total soluble carbohydrate was higher at 300 mg kg-1 than two other potassium levels. Leaf soluble carbohydrate in both cultivars was higher at 200 mg kg-1, although the potassium level was lower. Potassium was also caused to increase grain starch during the grain filling period. In general, due to lower leaf area duration in both cultivars, remobilization was lower at 200 mg kg-1 than other levels
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