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Elevated Atmospheric CO 2 Concentration Influences the Rooting Habits of Winter-Wheat ( Triticum aestivum L.) Varieties

Author

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  • Balázs Varga

    (Agricultural Institute, Centre for Agricultural Research, Eötvös Loránd Research Network, 2462 Martonvásár, Hungary)

  • Zsuzsanna Farkas

    (Agricultural Institute, Centre for Agricultural Research, Eötvös Loránd Research Network, 2462 Martonvásár, Hungary)

  • Emese Varga-László

    (Agricultural Institute, Centre for Agricultural Research, Eötvös Loránd Research Network, 2462 Martonvásár, Hungary)

  • Gyula Vida

    (Agricultural Institute, Centre for Agricultural Research, Eötvös Loránd Research Network, 2462 Martonvásár, Hungary)

  • Ottó Veisz

    (Agricultural Institute, Centre for Agricultural Research, Eötvös Loránd Research Network, 2462 Martonvásár, Hungary)

Abstract

The intensity and the frequency of extreme drought are increasing worldwide. An elevated atmospheric CO 2 concentration could counterbalance the negative impacts of water shortage; however, wheat genotypes show high variability in terms of CO 2 reactions. The development of the root system is a key parameter of abiotic stress resistance. In our study, biomass and grain production, as well as the root growth of three winter-wheat varieties were examined under optimum watering and simulated drought stress in a combination with ambient and elevated atmospheric CO 2 concentrations. The root growth was monitored by a CI-600 in situ root imager and the photos were analyzed by RootSnap software. As a result of the water shortage, the yield-related parameters decreased, but the most substantial yield reduction was first detected in Mv Karizma. The water shortage influenced the depth of the intensive root development, while under water-limited conditions, the root formation occurred in the deeper soil layers. The most intensive root development was observed until the heading, and the maximum root length was recorded at the beginning of the heading. The period of root development took longer under elevated CO 2 concentration. The elevated CO 2 concentration induced an accelerated root development in almost every soil layer, but generally, the CO 2 fertilization induced in the root length of all genotypes and under each treatment.

Suggested Citation

  • Balázs Varga & Zsuzsanna Farkas & Emese Varga-László & Gyula Vida & Ottó Veisz, 2022. "Elevated Atmospheric CO 2 Concentration Influences the Rooting Habits of Winter-Wheat ( Triticum aestivum L.) Varieties," Sustainability, MDPI, vol. 14(6), pages 1-14, March.
    • Handle: RePEc:gam:jsusta:v:14:y:2022:i:6:p:3304-:d:769220
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    4. Manderscheid, Remy & Dier, Markus & Erbs, Martin & Sickora, Jan & Weigel, Hans-Joachim, 2018. "Nitrogen supply – A determinant in water use efficiency of winter wheat grown under free air CO2 enrichment," Agricultural Water Management, Elsevier, vol. 210(C), pages 70-77.
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    Cited by:

    1. Balázs Varga, 2023. "Plant Breeding Supporting the Sustainable Field Crop Production," Sustainability, MDPI, vol. 15(5), pages 1-5, February.

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