Designing wheat ideotypes to cope with future changing climate in South-Eastern Australia

Wang, Bin; Feng, Ping; Chen, Chao; Liu, De Li; Waters, Cathy; Yu, Qiang

doi:10.1016/j.agsy.2018.12.005

Cited by 51 publications

(22 citation statements)

References 53 publications

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“…Another example involves the use of different times of sowing (TOS) within a cropping season. The TOS concept is commonly used by crop modellers and agronomists as a surrogate for generating different thermal environments in studies of crop responses to temperature (Hunt et al, 2019; Kirkegaard et al, 2016; Wang et al, 2019). Adjusting TOS has also been suggested as one of the most convenient management strategies for climate change impact at the field level (Donatelli, Srivastava, Duveiller, Niemeyer, & Fumagalli, 2015).…”

Section: Introductionmentioning

confidence: 99%

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Acclimation of leaf photosynthesis and respiration to warming in field‐grown wheat

Coast

Posch

Bramley

et al. 2021

Plant Cell & Environment

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Climate change and future warming will significantly affect crop yield. The capacity of crops to dynamically adjust physiological processes (i.e., acclimate) to warming might improve overall performance. Understanding and quantifying the degree of acclimation in field crops could ensure better parameterization of crop and Earth System models and predictions of crop performance. We hypothesized that for field‐grown wheat, when measured at a common temperature (25°C), crops grown under warmer conditions would exhibit acclimation, leading to enhanced crop performance and yield. Acclimation was defined as (a) decreased rates of net photosynthesis at 25°C (A25) coupled with lower maximum carboxylation capacity (Vcmax25), (b) reduced leaf dark respiration at 25°C (both in terms of O2 consumption Rdark_O225 and CO2 efflux Rdark_CO225) and (c) lower Rdark_CO225 to Vcmax25 ratio. Field experiments were conducted over two seasons with 20 wheat genotypes, sown at three different planting dates, to test these hypotheses. Leaf‐level CO2‐based traits (A25, Rdark_CO225 and Vcmax25) did not show the classic acclimation responses that we hypothesized; by contrast, the hypothesized changes in Rdark_O2 were observed. These findings have implications for predictive crop models that assume similar temperature response among these physiological processes and for predictions of crop performance in a future warmer world.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Acclimation of leaf photosynthesis and respiration to warming in field‐grown wheat

Coast

Posch

Bramley

et al. 2021

Plant Cell & Environment

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“…Therefore, it is likely that these areas are particularly susceptible to climate change. Although certain simulation‐based studies were conducted in China (Li et al., 2016; Liu et al., 2018; Xiao et al., 2013) and eastern Australia (Wang et al., 2019), there is insufficient information on how warming influences wheat phenology in monsoon Asia when considering the interactions among cultivars, sowing dates, and growing environments. Wang et al.…”

Section: Discussionmentioning

confidence: 99%

Interactions of cultivar, sowing date, and growing environment differentially alter wheat phenology under climate warming

et al. 2021

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Temperature is one of the most influential factors in crop phenology and is projected to increase substantially due to climate change. To adapt to climate change, it is necessary to understand how crops develop depending on cultivar choice, sowing time, and growing environment under various warming conditions. To clarify the influence of these interactions, we investigated 216 combinations of the genotype × environment × management interaction of wheat (Triticum aestivum L.) development. These included nine scenarios of constant and seasonal warming conditions, two cultivar types (spring‐type and winter‐type wheat), six sowing dates, and two cultivation environments (relatively cool or warm area), and the change in wheat heading dates was simulated using sigmoid and exponential function–based models. Simulations of growing conditions 1−5 °C above the average temperature during 1981–2010 resulted in the faster growth of spring‐type cultivars, and the earlier the cultivars were sown, the faster they grew to heading stage. The winter‐type cultivars showed a smaller advancement to heading than the spring‐type cultivars, but the shortening period from sowing to heading became greater when grown in a cooler environment if the temperature significantly increased. In addition, increased temperatures in spring induced the advancement of heading more than similar conditions in winter. Our findings indicated that the advancement of the heading date varied greatly depending on the four‐factor combinations. Delaying sowing time and changing to winter‐type cultivars from spring‐type cultivars were thought to be effective adaptations; however, the adaptation strategies should be carefully planned depending on the agricultural management and warming conditions.

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“…Ahmad et al (2019) stated that CO 2 enrichment could have positive effects on wheat yield and its water productivity (WP), but would not completely eliminate the negative effects of future global warming on wheat yield in the semiarid conditions of Pakistan. For Eastern Australia, Wang et al (2019) deduced that for rainfed wheat, the choice of cultivars with a longer grain-filling period is more effective than the choice of sowing dates to adapt to a drier climate during 2061-2100 under RCP 8.5 scenario.…”

Section: Introductionmentioning

confidence: 99%

Assessment of future climate change impact on rainfed wheat yield in the semi-arid Eastern High Plain of Algeria using a crop model

et al. 2020

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Maintaining sustainability in rainfed wheat production under changing climate is a grave concern for food security in Algeria. This study aims to assess the impact of future climate change on rainfed wheat yield in the semiarid Eastern High Plains (Setif and Bordj Bou Arreridj (BBA)) in Algeria using AquaCrop model. For this purpose, the EURO-CORDEX climate projections by 2035-2064 and 2065-2094 were downscaled using ICHEC_KNMI model under two representative concentration pathway (RCP) scenarios RCP 4.5 and RCP 8.5. The crop model predicted wheat yield increase by 82-95% and 77-118% at Setif and by 8-16% and 133-135% at BBA under the RCP 4.5 (2035-64 and 2065-94) and RCP 8.5 (2035-64 and 2065-94) scenarios, respectively, compared to the yield of the baseline period of 1981-2010. Future yield improvement is due to the fertilizing effect of the elevated carbon dioxide (CO 2 ) concentration in the atmosphere, which offsets the negative impacts of rising temperature, decreasing precipitations and the net solar radiation. The expected increase in yield is much higher under RCP 8.5 compared to RCP 4.5 because CO 2 concentration is higher under RCP 8.5. The model predicted an increase in wheat water productivity because of the expected decrease in evapotranspiration losses. To adapt rainfed wheat to future climate change in the study area, early sowing in mid-October provides better yields because it allows the wheat crop to take more benefits from increased precipitation during the vegetative development stage and to avoid the spring warming temperature.

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Designing wheat ideotypes to cope with future changing climate in South-Eastern Australia

Cited by 51 publications

References 53 publications

Acclimation of leaf photosynthesis and respiration to warming in field‐grown wheat

Acclimation of leaf photosynthesis and respiration to warming in field‐grown wheat

Interactions of cultivar, sowing date, and growing environment differentially alter wheat phenology under climate warming

Assessment of future climate change impact on rainfed wheat yield in the semi-arid Eastern High Plain of Algeria using a crop model

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