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.
Highlights
Soybean (Glycine max (L.) Merrill) have played a leading role in grain production increase in the Brazil
Using the lowest dose of P available on soil (Ps) (P1), in the case of the cultivars' average, the increases in efficiency of P use (EUSE), the efficiency of absorption (EABS), the efficiency of utilization (EUTIL), and the quotient of P utilization (QUTIL) were 113, 4, 93, and 67 %, respectively, compared to larger dose of P on soil (P2), a behavior contrary to what happened with the growth and yield components (Table 1)
The efficiency values usually decrease with increased nutrient levels due to the high leveling of production with increasing content at the same level (Fageria, 1992); this fact means, for example, that the efficiency of P utilization is the maximum at the lowest nutrient level and minimum at the highest nutrient level
Summary
Soybean (Glycine max (L.) Merrill) have played a leading role in grain production increase in the Brazil. Part of this success is resulted from the soybean breeding programs developed by Brazilian researchers of institutes and universities (Bortolotto et al, 2015; Camargos, Campos, Alves, Ferreira, & Matsuo, 2019; Harada, Gonçalves, Kiihl, & Destro, 2015). Plants use two strategies for their development under limiting conditions of phosphorus (P), the efficiency increase of usage and acquisition. Sahrawat and Sika (2002) report the efficiency of P recovery in irrigated rice, ranging from 5 to 11%. Novais & Smyth (1999) report values for soybean, ranging from 2 to 16%. According to Lynch & Ho (2005), the involved processes in the P acquisition by plants are the diffusion and replenishment of the soil solution with nutrient and the elongation of the root system
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
