Physicochemical composition of two soybeans depending on plant height
DOI:
https://doi.org/10.5016/1984-5529.2023.v51.1455Keywords:
centesimal composition, Glycine max; post-harvest.Abstract
The architectural characteristics of soybean plants can directly influence their ability to reproduce, absorb solar radiation, biological fixation and, consequently, the chemical composition of the grains. Therefore, the objective was to evaluate the influence of pod height in the soybean plant on the physicochemical composition of the grains in eight cultivars. Three plant heights were evaluated: upper third, middle third and lower third, in terms of water content, lipids, proteins, ash, carbohydrates, caloric value and apparent specific mass. The water content was determined in an oven until constant mass. The protein content was determined by the micro Kjeldahl method and the lipids were extracted by the Soxhlet method. The fixed mineral residue was determined by incineration in a muffle furnace at 550 ºC and the carbohydrates were determined by means of the difference between the constituents. The apparent specific mass was obtained through a relationship between mass (kg) and volume (m3). The experiments were carried out in triplicate in an 8 x 3 factorial scheme. There was an effect between plant height and cultivars, with the content of water, lipids, proteins, carbohydrates and ash. For plant heights in soybean, the upper third showed superior results, being the position with the best physicochemical composition. The cultivars that stood out were NS 7667 and Aporé, obtaining the highest yield potential.
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Copyright (c) 2023 Luana Profiro OLIVEIRA, Osvaldo RESENDE, Adrielle Borges ALMEIDA, Isabela Santos Martins PAULA, Jennifer Cristhine Oliveira CABRAL
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