The Impact of Si Fertilization on Healthy Attributes and Yield of Grains of Wheat Plants Grown under P Deficiency

Phosphorus (P) deficiency is one of the major limiting factors wheat production worldwide. Although silicon (Si) known to improve plant growth under low phosphorus conditions, impact Si supply on nutritional quality grains at field conditions remains unclear. This study aimed investigate fertilization healthy attributes and yield plants grown a P deficiency. A experiment an Andisol with available content never amended fertilizer was conducted. Two cultivars contrasting tolerance (cv. Púrpura, sensitive deficiency; cv. Fritz, tolerant deficiency) were used during two growing seasons. Three doses (0, 200, 400 mg kg−1 soil; as triple superphosphate) applied in combination three 250, 500 magnesium silicate). At mature grain stage, concentration, total phenols, phenolic acids, radical scavenging activity, components evaluated. both seasons, enhanced concentration Púrpura absence P, whereas increased along gradient supply. Interestingly, increasing augmented phenol antioxidant capacity without In contrast, decreased Fritz slight increment acids induced by 250 also detected P. positive effect found. first season, added deficient about 23% 47% respectively. significant increase observed second year assay. Taken together, our finding showed that improved phenols production, conditions. this way, could be potential strategy crop soils availability. Acknowledgments. FONDECYT Regular Project N°1201257.