Exploring soybean management options for environments with contrasting water availability

Mauro, Guido Di; Borrás, Lucas; Rugeroni, Pablo; Rotundo, José L.

doi:10.1111/jac.12321

Cited by 15 publications

(4 citation statements)

References 48 publications

(77 reference statements)

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“…The growth conditions are fully described in Di Mauro, Borrás, Rugeroni, and Rotundo (2019). Briefly, this system prevented rainfall to enter the plots, and therefore water availability was managed by drip-irrigation.…”

Section: Field Experimentsmentioning

confidence: 99%

Morpho‐physiological traits associated with drought responses in soybean

et al. 2020

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Drought is currently a major constraint to soybean [Glycine max (L.) Merr.] production worldwide and is becoming more widespread due to increased aridity and warmer temperatures in the context of global climate change. In this context, breeding for soybean varieties more tolerant to drought stress is critical and requires efficient screening techniques. To find traits associated with drought tolerance at the vegetative stage that are still present at the reproductive stage, we evaluated morphological, physiological, and biochemical traits in two soybean genotypes contrasting in their response to drought stress. Under drought stress at the vegetative stage, the tolerant A 5009 RG genotype showed higher proline and chlorophyll contents, and early activation of the enzymatic antioxidant system compared with well‐watered plants. On the other hand, the sensitive ADM 50048 genotype increased malondialdehyde (oxidative damage marker) and nonenzymatic antioxidant response under stress. Manipulative field assays under contrasting levels of water availability at the reproductive stage mimicked the biochemical patterns observed in the greenhouse tests for the sensitive and tolerant genotypes. A principal component analysis of parameters from vegetative and reproductive stages revealed proline and chlorophyll contents as drought tolerance traits in soybean. We found those traits useful to classify 14 genotypes from the Instituto Nacional de Tecnologia Agropecuaria (INTA) germplasm bank, identifying two new drought‐tolerant genotypes (PI 548510 and PI 200492). We propose proline and chlorophylls as useful tools to classify soybean genotypes according to their drought responses in early developmental stages, potentially reducing breeding times.

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Section: Field Experimentsmentioning

confidence: 99%

Morpho‐physiological traits associated with drought responses in soybean

et al. 2020

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“…Despite these limitations, which may limit early growth and subsequent yields, many regions recommend early sowing of soybean in cold soils (Di Mauro, Borrás, Rugeroni, & Rotundo, 2019; Rattalino Edreira et al, 2020) to take advantage of early rainfall, to avoid summer drought, reduce disease and insect damage and extend the growing season. Local soybean production has the potential to improve protein self‐sufficiency (de Visser, Schreuder, & Stoddard, 2014), even though many European countries have suboptimal environments for soybean (Kurasch et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Genotype and cytokinin effects on soybean yield and biological nitrogen fixation across soil temperatures

Kempster

Barat

Bishop

et al. 2020

Annals of Applied Biology

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High nitrogen (N) supply is required for high‐yielding soybean, but low soil temperatures in either early production systems or cool environments delay nodulation and limit biological nitrogen fixation (BNF). Because cytokinins are key signalling hormones in mediating nodule formation and our initial controlled environment experiment indicated that seed cytokinin treatment increased early BNF and total nodule area, it was used in field trials. Cytokinin was applied (seed or foliar) to two commercial soybean genotypes (DM50I17 and DM40R16) in field trials with early (September and early November) and conventional (late November) sowing dates in Argentina. In the field, DMR50I7 achieved consistent yields across sowing dates because increased BNF compensated for limited soil N uptake in early sowing dates, also leading to 25% higher nitrogen use efficiency (NUE). Surprisingly, soil N uptake was more cold‐sensitive than BNF with greater and prolonged N fixation in early sowing, perhaps through delayed nodulation, leading to improved N harvest index. Cytokinin seed treatment increased BNF (26%) in DM40R16 especially in early sowing dates. Although cytokinin improved cold tolerance of BNF, this was not explained by altered nodulation and did not increase yield. Here we show genetic differences in N supply in commercial soybean genotypes and the importance of BNF to maintain yield in early sown soybean.

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“…Reduced biomass parameters under drought conditions are associated with reduced photosynthetic intensity, resulting in impaired biomass accumulation and the movement of assimilates to seeds [184]. According to Frieler et al [200], alleviation of water deficit in the flowering and grain-filling stages of soybean results in improved photosynthetic efficiency, leading to higher biomass yields and favorable effects on plant productivity [201].…”

Section: Water Stressmentioning

confidence: 99%

Responses of Soybean to Selected Abiotic Stresses—Photoperiod, Temperature and Water

2023

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The sharp increase in soybean (Glycine max (L.) Merrill) acreage in the late 20th century and early 21st century is due to the demand for edible oil and feed protein. However, a limiting factor in the extent of soybean cultivation is its high heat requirements and response to photoperiod. Most varieties are short-day plants and are generally the best-yielding genotypes. At higher latitudes (longer day length), there is a delay in the occurrence of subsequent developmental stages and problems with plant maturation before the onset of autumn frost. Global warming allows the cultivation range of warm-season species (including soya) to be shifted; however, periodic droughts and very high temperatures limit crop production. Adverse weather events result in a reduction in soybean seed yield of around 30%. Environmental stresses related to day length, high and low temperatures and water shortage or excess have the greatest impact on soybean yields, as we have no influence on them and can only, to a very limited extent, offset their negative effects. This paper reviews the recent world literature on how soybean responds to these stress factors. The results of our own research were also used.

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Exploring soybean management options for environments with contrasting water availability

Cited by 15 publications

References 48 publications

Morpho‐physiological traits associated with drought responses in soybean

Morpho‐physiological traits associated with drought responses in soybean

Genotype and cytokinin effects on soybean yield and biological nitrogen fixation across soil temperatures

Responses of Soybean to Selected Abiotic Stresses—Photoperiod, Temperature and Water

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