Management and environmental factors explaining soybean seed protein variability in central Argentina

Bosaz, Lina B.; Gerde, José A.; Borrás, Lucas; Cipriotti, Pablo Ariel; Ascheri, Luciano; Campos, Matías; Gallo, S

doi:10.1016/j.fcr.2019.05.007

Cited by 23 publications

(22 citation statements)

References 37 publications

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“…Moreover, N and SOM contents were positively correlated with CP in soybean grain, as reported by Spoljar et al [40]. Furthermore, other factors not considered in this study, such as cultivar and year, may affect protein and oil content in soybean more than nutrient availability with medium-to-high initial soil fertility [41,42].…”

Section: Discussionsupporting

confidence: 70%

Effect of Tree Presence and Soil Characteristics on Soybean Yield and Quality in an Innovative Alley-Cropping System

et al. 2019

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Agroforestry is indicated as a farming practice suited to enhance ecosystem services generated by cropping systems. However, farmers are often reluctant to implement agroforestry systems due to the potential yield loss of crops. In a field trial, soybean was intercropped with poplar short-rotation-coppice rows in an alley-cropping system with 13.5 m wide alleys, in order to assess the effect of tree presence on soybean yield and quality. The light availability (LA) was significantly affected by the tree presence, with an increasing effect along the season due to tree growth, being at its lowest in the tree–crop interface positions (West and East). Significant effects of the tree-distance and LA were registered on soybean yield, with the highest reduction of soybean yield in the West (−78%) and East (−35%) positions. Crude fat content in soybean grain did not vary among positions in the alley, while crude protein content was the lowest in the most shaded position (West −8% than the highest value). The assessment of spatial variability among plots of measured soil characteristics highlighted no significant effect of pedological conditions upon soybean yield. Thus, in our study, the LA effect was more important than soil characteristics in determining a detrimental effect of competition for resources between soybean and poplar. Conversely, soybean quality was affected by soil characteristics, since crude fat significantly correlated with soil nutrients, pH, soil organic matter and soil texture.

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Section: Discussionsupporting

confidence: 70%

Effect of Tree Presence and Soil Characteristics on Soybean Yield and Quality in an Innovative Alley-Cropping System

et al. 2019

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“…The experimental results showed significant improvements in seed protein concentration of ∼25 g kg −1 in response to fertilization only in late‐sowing experiments. This result was at first counterintuitive since a higher response to N fertilization would have been expected in early sowing dates usually associated with reduced seed protein concentration (Bosaz et al., 2019); however, in this experiment there was no effect of sowing date when focusing on the unfertilized control treatments (planting date × treatment interaction). An alternative hypothesis might be that a higher response to N fertilization in late sowing might be related with reduced levels of BNF associated with this type of planting dates.…”

Section: Discussionmentioning

confidence: 62%

“…We speculate that high protein concentration cultivars will show lower protein increases after N fertilizations because they commonly show higher N availability per growing seed . We also hypothesize that the same will apply to any management option that helps to attain higher seed protein concentration, like later plantings (Bosaz et al, 2019).…”

Section: Core Ideasmentioning

confidence: 95%

“…These cultivars were selected because of good performance in cultivar trials and also because they are representative of germplasm from high market share seed companies in the region. Both cultivars also had higher seed protein concentrations in later plantings compared earlier ones (Bosaz et al, 2019). Both cultivars were evaluated under three different N fertilization treatments: (a) soil N fertilization, (b) foliar N fertilization, and (c) control without N fertilization.…”

Section: Experimental Design and Treatmentsmentioning

confidence: 99%

“…There is an ongoing need to identify options under farmers’ control that can help increase seed protein concentration. Soybean seed protein is known to vary by cultivar but can also be affected by management practices such as planting date, and by environmental variables such as water availability and temperature (Assefa et al., 2019; Bosaz et al., 2019; Mourtzinis et al., 2017; Rotundo & Westgate, 2009).…”

Section: Introductionmentioning

confidence: 99%

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Late‐season N fertilization effects on soybean seed protein and biological N₂ fixation

et al. 2021

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Soybean [Glycine max (L.) Merr.] seed protein concentration has been declining over the past decades with protein values falling below the ∼40% (dry weight base) required for optimal industrial processing. Further refinement of management practices is needed to help maintain concentrations above market standards. The objective of this work was to evaluate the impact of N fertilization during late reproductive stage on soybean seed protein on two cultivars differing in seed protein concentration in order to untangle the role of biological nitrogen fixation (BNF) to mediate seed protein responses. In experiments at two planting dates, late N fertilization was applied as either a foliar or soil-applied fertilizer and consisted of applying 80 kg ha -1 of N from R3 to R6 with four 20 kg ha -1 N applications. Both cultivar and planting date affected seed yield and protein concentration, ranging from 3,242 to 3,949 kg ha -1 and 34.8 to 38.4 g 100 g -1 , respectively. Soil and foliar N fertilizations had no effect on yield or N uptake but had positive effects on seed protein concentration (+2 g 100 g -1 ) only in the late-planted experiments. Applying N in the soil inhibited BNF. The amount of N 2 fixed during the seed-filling period, expressed per unit seed, is a relatively good predictor of the response of seed protein to N fertilization suggesting a critical role of BNF during this stage for securing a high concentration of seed protein.

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Exploring seed and meal composition and protein solubility in soybean genotypes from different domestication periods

Bosaz

Prado

Rotundo

et al. 2023

J Americ Oil Chem Soc

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Traditionally, commercial soybean breeding has focused on increasing seed yield by crossing elite cultivars and limiting the genetic diversity within commercial germplasm. Wild and ancestral soybean genotypes have higher seed protein concentrations than commercial ones. Different seed protein concentrations and compositions result in diverse functional properties of soybean meal, in particular solubility is important for beverages and protein isolates production. The objectives of our study were (i) to characterize seed protein concentration and composition in genotypes from different soybean domestication periods (types) and (ii) to evaluate the protein concentration and solubility profiles of the defatted meals obtained from these genotypes. Variation within seed and meal protein concentration, composition, and solubility was evident along the domestication process. Wild relative (G. soja) and Elite genotypes had the maximum and minimum seed protein concentrations, respectively (42.9 and 36.3 g 100 g−1). Soybean meal protein concentrations were 55.1, 47.7, 48.4 and 44.1 g 100 g−1 for Wild relative (G. soja), Asian landraces, North American (Nam) ancestors and Elite, respectively. Ample genotypic variation was observed for β‐conglycinin components, such as for β, α, and α′ subunits and for total glycinin and its components. Asian landraces had the highest protein solubility. Wild and ancestral germplasm are a reservoir of useful traits to improve soybean seed quality. This study opens the gates to the introduction of ancestral germplasm to breeding programs focused on protein quality and functionality.

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Management and environmental factors explaining soybean seed protein variability in central Argentina

Cited by 23 publications

References 37 publications

Effect of Tree Presence and Soil Characteristics on Soybean Yield and Quality in an Innovative Alley-Cropping System

Effect of Tree Presence and Soil Characteristics on Soybean Yield and Quality in an Innovative Alley-Cropping System

Late‐season N fertilization effects on soybean seed protein and biological N₂ fixation

Exploring seed and meal composition and protein solubility in soybean genotypes from different domestication periods

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Management and environmental factors explaining soybean seed protein variability in central Argentina

Cited by 23 publications

References 37 publications

Effect of Tree Presence and Soil Characteristics on Soybean Yield and Quality in an Innovative Alley-Cropping System

Effect of Tree Presence and Soil Characteristics on Soybean Yield and Quality in an Innovative Alley-Cropping System

Late‐season N fertilization effects on soybean seed protein and biological N2 fixation

Exploring seed and meal composition and protein solubility in soybean genotypes from different domestication periods

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Late‐season N fertilization effects on soybean seed protein and biological N₂ fixation