Response of soybean yield components and allocation of dry matter to increased temperature and CO2 concentration

Pereira-Flores, Milton E.; Justino, Flávio; Ruiz‐Vera, Ursula M.; Stordal, Frøde; Melo, Ânderson Adriano Martins; Rodrigues, Rui

doi:10.21475/ajcs.2016.10.06.p7310

Cited by 9 publications

(23 citation statements)

References 45 publications

(60 reference statements)

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“…Plants grown with higher CO 2 are taller than the plants in present conditions in the most several cultivars of soybean due to more nodes [34,65,66]. However, it is also possible to find no stimuli for the increase in the final height of the plant, which may be more likely in cultivars of certain growth habit [34]. Early results of [67] showed increase in height of the plant directly related with increase of more internodes and length of branches, or both.…”

Section: Changes In Plant Height Branches and Racemesmentioning

confidence: 77%

“…Moreover, the understanding of plant shape allows for identification of plant features which are more strongly affected by environmental conditions such as CO 2 and weather parameters. Plants grown with higher CO 2 are taller than the plants in present conditions in the most several cultivars of soybean due to more nodes [34,65,66]. However, it is also possible to find no stimuli for the increase in the final height of the plant, which may be more likely in cultivars of certain growth habit [34].…”

Section: Changes In Plant Height Branches and Racemesmentioning

confidence: 77%

“…Thus, the temperature increase can be favorable if closed to optimal temperature to soybean growth, even in conditions of greater availability of photoassimilates under higher concentrations of CO 2 . Statistical analysis of correlation carried out by [34,65] demonstrated a positive correlation between the plant height and the number of racemes, cultivar-dependent, under elevated CO 2 with 750 and 548 μmol.mol −1 and air temperatures, respectively. There was positive and significant increases in the number of nodes of soybean plant grown with elevated [CO 2 ].…”

Section: Changes In Plant Height Branches and Racemesmentioning

confidence: 96%

“…The increase in soybean production under high [CO 2 ] has been variable, ranging from increases of about 17%, marginal increases [33,34], and no gain in production [35]. In most cases the increases have been derived mainly from gains in the total weight of grains at harvest, the increase in the number of pods [36] and the average weight of the grains [34,37].…”

Section: Yield and Yield Components 21 Yield Productionmentioning

confidence: 99%

“…Thus, in studies on the plant effects of high concentrations of CO 2 and O 3 it will be important to define the density of plants in the experimental field that avoid Soybean -Biomass, Yield and Productivity 6 high intraspecific competition during flowering and fixation of pods. An excessive competition for light can alter yield components such as number of branches and pods [34,48,49].…”

Section: Yield Component Basismentioning

confidence: 99%

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Yield Components and Biomass Partition in Soybean: Climate Change Vision

Pereira-Flores¹,

Justino²

2019

Soybean - Biomass, Yield and Productivity

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Long-term climate change and inter-annual climate variability are events of concern to farmers and humanity. Global warming could affect agriculture in various ways and it is anticipated that agricultural systems will face great pressure from the variability of climate factors and their extreme events, which in most cases are difficult to predict, particularly extreme events of rainfall, higher dry season, hot and cold waves and their interactions. Global warming could also have some positive effects for plants such as increasing the temperature of current cold regions and increasing carbon dioxide with its positive effect on photosynthesis, growth rates, the use of water and production. Meanwhile, there are still many questions that remain about this possible future. This chapter, brings the response of plants to future conditions through specifics alterations in its components of yield on environmental conditions with enrichment of CO 2 and elevated temperature, two climatic factors, which is understood to be the factors of climatic change of greater global extent. The study of the components of yield and their alterations, can guide diverse sectors of the sciences and decision makers, in order to structure strategies of resilience in the cultivation of soybean. 2 level. This anticipated knowledge may be important for the direction of policies and research lines in various areas of agricultural sciences to develop diverse resilience strategies to climate change.The understanding of how climate influences the growth, development and production of soybean plants depends on the understanding of how the yield components respond to the variations of climate factors, which can also be elucidated if studies the plant alterations in the future atmosphere conditions. The plant production is determined by changes in yield components, in last instance. The artificial enrichment of the growth environment of soybean plants with CO 2 , O 3 and temperatures according to the forecasts on the atmospheric composition for the year 2100, can allow to know the morphophysiological responses in several levels of the plant organization, long before environmental changes occur.The study of the morphophysiological mechanisms of response of soybean plants to the ecological environment where they develop and produce grains, constitutes the basis of soybean ecophysiology.The factors of the climate (temperature, radiation, rainfall, wind and atmospheric pressure, among others), plus the physicochemical properties of the soil and the cultural practices applied in the field continuously influence the performance of the community of soya plants from germination to the senescence of the plants. Throughout the different phenological stages, the expression of stage-tissue genes defines the course of the development of the plant, the formation of the biomass and its components (roots, stems, leaves, flowers, fruits and seeds) respond simultaneously and hierarchically with the objective of completing its biological cycle and producing seeds for the...

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Section: Changes In Plant Height Branches and Racemesmentioning

confidence: 77%

Section: Changes In Plant Height Branches and Racemesmentioning

confidence: 77%

Section: Changes In Plant Height Branches and Racemesmentioning

confidence: 96%

Section: Yield and Yield Components 21 Yield Productionmentioning

confidence: 99%

Section: Yield Component Basismentioning

confidence: 99%

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Yield Components and Biomass Partition in Soybean: Climate Change Vision

Pereira-Flores¹,

Justino²

2019

Soybean - Biomass, Yield and Productivity

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Field and model assessments of irrigated soybean responses to increased air temperature

et al. 2020

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Correctly quantifying elevated air temperature effects on crop yield through field experiments and crop modeling is essential for developing adaptation strategies under climate change. In this study, the effects of elevated air temperature on soybean [Glycine max (L.) Merr.] production were investigated using a four-year open top chamber experiment (2015-2018) in North Carolina, USA. The experimental results showed that an increase of average air temperature during growing seasons by 3.4 • C to 25.7 • C decreased seed yield by 22%, final biomass by 11%, and harvest index by 12%, but did not significantly affect maturity date. The reduction in seed yield was more associated with reduction in seed number (19%) than in seed weight (2%). Two soybean growth models (CROPGRO and HER-MES) in the Root Zone Water Quality Model (RZWQM) were evaluated against measured temperature responses from the four-year experiment. Both crop models simulated lower reduction in seed yield (15% for CROPGRO and 17% for HER-MES), but simulated reduction in biomass was lower by CROPGRO (7%) and higher by HERMES (20%) than that measured in the chambers. Between the two models, HERMES predicted slightly better responses of seed yield and biomass to temperature across the four years than CROPGRO, whereas the opposite was true for maturity date and harvest index. However, HERMES simulated earlier maturity dates for heated treatment than observed, suggesting that improvements are needed in the model for soybean phenology response to temperature increase.

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Is the yield change due to warming affected by photoperiod sensitivity? Effects of the soybean E4 locus

Kumagai

Yamada

Hasegawa

2019

Food and Energy Security

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Modeling studies predict that global warming will shorten growth duration and reduce seed yield of early‐maturing soybean (Glycine max) cultivars, but that late‐maturing cultivars could mitigate this reduction. This is widely discussed but has not been validated experimentally. Time of soybean maturation is determined by several photoperiod‐sensitive loci. Here, we focused on the E4 locus, and tested the hypothesis that this locus would mitigate the growth period shortening and yield reduction due to warming. We sowed cv. Enrei with the dominant E4 allele and a near‐isogenic line with recessive e4 allele (NIL‐e4) on two dates (normal vs. late, with a shorter photoperiod) and grown under three temperature regimes (near‐ambient, and 2.0 and 4.6°C above ambient) in sunlit greenhouses in a cool region of Japan. The period from sowing to flowering (R1) decreased with increasing temperature, regardless of genotype and sowing date. However, increased temperature prolonged the period from R1 to the beginning of pod filling (R3) in Enrei but not in NIL‐e4 for either sowing date. This indicates that increasing temperature shortened the period before R1, exposing Enrei with E4 to a longer photoperiod and therefore slowing its development. For both sowing dates, pod number and seed yield increased with warming in Enrei. Since the days from R1 to R3 and the cumulative radiation for this period were positively correlated with pod number in Enrei, the greater yield response was explained mostly by the prolongation of this period caused by warming. However, the yield increase resulted partially from the current mean growing season temperature, which was near or below the optimum for yield. We conclude that the E4 locus can increase seed yield under future warming in cool regions of Japan. This result demonstrates the potential importance of modifying photoperiod sensitivity to increase soybean yield under future warming.

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Response of soybean yield components and allocation of dry matter to increased temperature and CO2 concentration

Cited by 9 publications

References 45 publications

Yield Components and Biomass Partition in Soybean: Climate Change Vision

Yield Components and Biomass Partition in Soybean: Climate Change Vision

Field and model assessments of irrigated soybean responses to increased air temperature

Is the yield change due to warming affected by photoperiod sensitivity? Effects of the soybean E4 locus

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