Efficiency and responsiveness of using phosphorus and molecular diversity among soybean cultivars

Abstract

Plants use two strategies for their development under nutrient limiting conditions that are the efficiency increase of usage and acquisition. In this situation, the use of efficient genotypes for acquisition and utilization of phosphorus (P) may be a complementary solution to minimize possible problems related to this nutrient in Brazilian soils. Thus, this study aimed to verify the efficiency, response, and cultivar molecular diversity concerning the phosphorus availability variations. The experiment was carried out in a greenhouse using twelve soybean cultivars, such as W 711; MSoy 7211; Anta 82; TMG 1176; MSoy 7908; TMG 132; Valiosa; MSoy 8766; BRS 271; MSoy 9144; Tracajá; and Candeia. The seeds of each cultivar were sown on soil with two doses: 30 and 300 mg P per soil kg. The efficiency indexes, response to P, and molecular analyzes were evaluated. The most efficient cultivars in the use of P and responsive to the increase of P were TMG 1176, TMG 132, Valiosa, and MSoy 9144.