Predicting the impact of climate change on water requirement of wheat in the semi-arid Indo-Gangetic Plains of India

Chattaraj, S.; Chakraborty, Debashis; Sehgal, Vinay Kumar; Paul, Ranjit Kumar; Singh, S. D.; Daripa, A.; Pathak, Himanshu

doi:10.1016/j.agee.2014.07.023

Cited by 19 publications

(9 citation statements)

References 21 publications

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“…In contrast with the effects of eCO 2 , warming increases g s and leaf transpiration rates ( E ) under adequate conditions of water availability (Chattaraj et al, 2014). Increased temperature stimulates H + efflux through guard cells and increases whole-cell conductance to K + , which diffuses to guard cells, promoting water influx (Ilan et al, 1995).…”

Section: Introductionmentioning

confidence: 99%

Stomatal Development and Conductance of a Tropical Forage Legume Are Regulated by Elevated [CO2] Under Moderate Warming

et al. 2019

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The opening and closing of stomata are controlled by the integration of environmental and endogenous signals. Here, we show the effects of combining elevated atmospheric carbon dioxide concentration ( eCO 2 ; 600 μmol mol -1 ) and warming (+2°C) on stomatal properties and their consequence to plant function in a Stylosanthes capitata Vogel (C 3 ) tropical pasture. The eCO 2 treatment alone reduced stomatal density, stomatal index, and stomatal conductance ( g s ), resulting in reduced transpiration, increased leaf temperature, and leading to maintenance of soil moisture during the growing season. Increased CO 2 concentration inside leaves stimulated photosynthesis, starch content levels, water use efficiency, and PSII photochemistry. Under warming, plants developed leaves with smaller stomata on both leaf surfaces; however, we did not see effects of warming on stomatal conductance, transpiration, or leaf water status. Warming alone enhanced PSII photochemistry and photosynthesis, and likely starch exports from chloroplasts. Under the combination of warming and eCO 2 , leaf temperature was higher than that of leaves from the warming or eCO 2 treatments. Thus, warming counterbalanced the effects of CO 2 on transpiration and soil water content but not on stomatal functioning, which was independent of temperature treatment. Under warming, and in combination with eCO 2 , leaves also produced more carotenoids and a more efficient heat and fluorescence dissipation. Our combined results suggest that control on stomatal opening under eCO 2 was not changed by a warmer environment; however, their combination significantly improved whole-plant functioning.

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Section: Introductionmentioning

confidence: 99%

Stomatal Development and Conductance of a Tropical Forage Legume Are Regulated by Elevated [CO2] Under Moderate Warming

et al. 2019

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“…Rabi sorghum and wheat require additional irrigation requirement of different magnitudes to sustain the current production levels. Parekh and Prajapati (2013), in their study on wheat CWR concluded that negligible decrease in CWR during 2011-2020, whereas a likely increase in CWR during future climate slices viz., 2021-2030, 2046-2065 and 2080-2099. Compared to other research findings, Chattaraj et al (2014) by conducting a field experiment in a semi arid region of the Indo-Gangetic Plains (IGP) of India reported that CWR of wheat are likely to be less in 2020-21 and 2050-51. They concluded that the projected decrease in water requirement may be either through shortening of growing period or decline in solar radiation.…”

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confidence: 67%

Trends in water requirements of wheat crop under projected climates in India

et al. 2018

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Various global circulation models predict a change in net irrigation requirements worldwide due to the impacts of climate change and in India, depending upon the region, irrigation requirements are likely to change by different magnitudes. The spatial distribution of trend in crop and irrigation water requirements of wheat projected for two climatic periods (2021-50 and 2051-80) across major wheatgrowing districts of the country were analyzed, making use of climate change projection data from NorESM1-M model of the CMIP5 in combination with RCP 4.5. Decreasing trends in water requirements were projected over 90 per cent of wheat growing districts in 2021-50, whereas increasing trends in crop and irrigation water requirement are expected over 95.4 per cent and 62.4 per cent areas, respectively in 2051-80 climatic periods. Results showed that decreasing/increasing trends projected in water requirements of wheat crop is due to change in crop growing period, which is projected to decrease across entire wheat growing area in 2021-50, whereas it is likely to increase over 78.2 per cent in 2051-80 climatic periods.

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“…These results are in agreement with Lv et al (2013), who reported that the earliest flowering date was found from the A2 scenario, followed by the A1 scenario and then the B1 scenario, as the highest rising temperature was found from the A2 scenario, followed by the A1 scenario and the then B1 scenario. The GCM simulation under different emission scenarios by Chattaraj et al (2014) showed a substantial reduction in the seasonal growing period by 6-8 and 11-21 days in 2020-2021 and 2050-2051 periods, respectively. They documented that this could be attributed towards an increase in both maximum and minimum temperatures, which led to an increase in growing degree days (GDD) within a specified time period.…”

Section: Discussionmentioning

confidence: 97%

“…Climate change is expected to have significant effects on crop growth, development and production (Asseng et al , 2011; Wheeler et al , 2000; Wanga et al , 2015). Wheat is a thermosensitive crop, and change in air temperature may alter the length of its growing period and subsequently grain yield (Chattaraj et al , 2014). Wheat production mainly depends on the duration of the reproductive period; thus, precise estimation of crop phenology is essential for yield prediction under both current and future climate conditions (Liu et al , 2016).…”

Section: Introductionmentioning

confidence: 99%

Evaluating planting date and variety management strategies for adapting winter wheat to climate change impacts in arid regions

Arefi

Saffari

Moradi

2017

IJCCSM

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Purpose The purpose of this study is to simulate the climate change impacts on winter wheat production and evaluate the possibilities of using various varieties and shifting planting date as two climate change adaptation strategies in Kerman Province, Iran. Design/methodology/approach Two types of global circulation model and three scenarios for three periods were used. Daily climatic parameters were generated by LARS-WG (Long Ashton Research Station-Weather Generator). The CERES-wheat model was used to simulate future winter wheat growth, development and production. Findings The results showed that CO2 had no effect on the phenology of winter wheat, and the negative impact of temperature on the grain yield was higher than the positive effect of CO2 enrichment. The length of the reproductive growth period of the winter wheat was significantly shortened as affected by the negative impacts of rise in temperature. The simulated results indicated that the grain yield of common (medium maturing) variety of winter wheat will decline, ranging from −0.27 to −18.71 per cent according to future climate changes. Adaptation strategies showed that the early maturing variety had a higher and more stable grain yield under climate change conditions than medium and delayed maturing varieties. Earlier planting date (20 October) increased wheat grain yield under future climatic conditions than common (November 5) planting date. In reverse, later planting (November 20) would accelerate harmful effects of climate change on wheat grain yield. Originality/value The results highlighted the potential of early maturing variety and early planting date as the appropriate agronomical approaches for mitigating harmful impacts of climate change on winter wheat production in arid regions.

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Predicting the impact of climate change on water requirement of wheat in the semi-arid Indo-Gangetic Plains of India

Cited by 19 publications

References 21 publications

Stomatal Development and Conductance of a Tropical Forage Legume Are Regulated by Elevated [CO2] Under Moderate Warming

Stomatal Development and Conductance of a Tropical Forage Legume Are Regulated by Elevated [CO2] Under Moderate Warming

Trends in water requirements of wheat crop under projected climates in India

Evaluating planting date and variety management strategies for adapting winter wheat to climate change impacts in arid regions

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