Hansen, E. M.

Hauggaard-Nielsen, H.

Launay, M.

Mikkelsen, Teis Nørgaard

Rose, P.

Online Research Database In Technology

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Downloaded from orbit.dtu.dk on: Jul 07, 2018Variable O3 episodes’ influence on yield and physiology in old and new wheat varietiesunder a climate change regime with elevated temperature and CO2 levelsHansen, E. M.; Launay, M.; Rose, P.; Hauggaard-Nielsen, H.; Mikkelsen, Teis NørgaardPublication date:2018Document VersionPublisher's PDF, also known as Version of recordLink back to DTU OrbitCitation (APA):Hansen, E. M., Launay, M., Rose, P., Hauggaard-Nielsen, H., & Mikkelsen, T. N. (2018). Variable O3 episodes’influence on yield and physiology in old and new wheat varieties under a climate change regime with elevatedtemperature and CO2 levels. Poster session presented at International Conference on Ozone and PlantEcosystems (2nd Ozone and Plants Conference), Florence , Italy.A A.EO A.O3 C CT CT.EO T WLA.O32030405060LantveteA A.EO A.O3 C CT CT.EO T WLA.O32030405060LennoxA A.EO A.O3 C.EO CT CT.EO CT.O3 T.EO50100150Bittern 43 Days After SowingVariable O3 episodes’ influence on yield and physiologyin old and new wheat varieties under a climate changeregime with elevated temperature and CO2 levels.The climate treatments werecombinations of two levels of temperature and CO2 and three O3regimes.Hansen EM(1) , Launay M(2) , Rose P(2) , Hauggaard-Nielsen H(1) and Mikkelsen TN(3)Materials and methodsOf three spring wheat varieties five pots with 12 seeds were grown under conditions shown in Table X; two modern varieties: Lennox and KWS Bittern, and a landrace variety, Lantvete.Pots were watered based on chamber temperature; pots at ambient started at 5200 g and ended at 7000 g over their growth cycle, while pots in warmer conditions received 200 g more water throughout the cycle. Water limited KWS Bitterns in treatments A.O3 and CT.O3 were at all times watered to a total weight of 5400 g and 5600 g respectively.RERAF FacilityThe plant growth facility, RERAF, includes six 75 m3 airtight chambers providing precision control of various climatic factors and air pollutants to mimic the impact of potential future climates and pollutant levels on plant growth. 19/12 °C 17/24 °C400 ppm 700 ppmNo O3 80-100 ppbAinsworth, E.A., 2017. Understanding and improving global crop response to ozone pollution. Plant J. 90, 886–897. https://doi.org/10.1111/tpj.13298Albert, K.R., Mikkelsen, T.N., Michelsen, A., Ro-Poulsen, H., van der Linden, L., 2011. Interactive effects of drought, elevated CO2 and warming on photosynthetic capacity and photosystem performance in temperate heath plants. J. Plant Physiol. 168, 1550–1561. https://doi.org/10.1016/j.jplph.2011.02.011Clausen, S.K., Frenck, G., Linden, L.G., Mikkelsen, T.N., Lunde, C., Jørgensen, R.B., 2011. Effects of Single and Multifactor Treatments with Elevated Temperature, CO2 and Ozone on Oilseed Rape and Barley. J. Agron. Crop Sci. 197, 442–453. https://doi.org/10.1111/j.1439-037X.2011.00478.xIngvordsen, C.H., Backes, G., Lyngkjær, M.F., Peltonen-Sainio, P., Jensen, J.D., Jalli, M., Jahoor, A., Rasmussen, M., Mikkelsen, T.N., Jørgensen, R.B., Stockmarr, A., Jørgensen, R.B., 2015. Significant decrease in yield under future climate conditions: Stability and production of 138 spring barley accessions. Eur. J. Agron. 63, 105–113. https://doi.org/10.1016/j.eja.2014.12.003Shaw, M.R., Zavaleta, E.S., Chiariello, N.R., Cleland, E.E., Harold, A., Field, C.B., 2002. Grassland Responses to Global Environmental Changes Suppressed by Elevated CO 2 Author(s): M. Rebecca Shaw, Erika S. Zavaleta, Nona R. Chiariello, Elsa E. Cleland, Harold A. Mooney and Christopher B. Field Source: Science (80-. ). 298, 1987–1990.Tian, H., Ren, W., Tao, B., Sun, G., Chappelka, A., Wang, X., Pan, S., Yang, J., Liu, J., S. felzer, B., M. melillo, J., Reilly, J., 2016. Climate extremes and ozone pollution: a growing threat to china’s food security. Ecosyst. Heal. Sustain. 2, e01203. https://doi.org/10.1002/ehs2.1203BackgroundThe impact of O3 on crop yield is a concern at present climatic conditions and effects of climate change will aggravate this impact (Ainsworth, 2017; Tian et al., 2016). Responses to changes in climatic factors are results of interactions and within plant regulation following the changes in one or more of these factors but also depends on genetic predispositions (Albert et al., 2011; Clausen et al., 2011; Ingvordsen et al., 2015; Shaw et al., 2002).Yield: All varieties yielded best in the ambient (A) treatments. O3 exposureimpacted differently depending on variety and O3 regime. In A-treatments, O3-exposure resulted in yield reduction in modern as well as landrace varieties. In the warmer CT-treatments yields are reduced by the climatetreatment and O3-impact depends on O3-regime and variety.Water Use Efficiency at day 56 or 58 after sowing. The varieties display differences in the treatments, thatmay be anticipated from the temperature settings: warmertreatment leads to lower WUE. The addition of ozone disturbs the varieties differently depending on the climate treatment.Dry matter yield / water consumption(right): the ratio of dry matter in the pots (g) to water consumed in the pots as  evapotranspiration (g). In several of the treatments varietiesshow no differences, although the landrace variety seem to outperformthe modern varieties in those where a difference is seen.Plant height wasfavored by warmtreatments for all varieties in the earlystages, but later in the growth period, plant height wasaffected by varietyas well as treatment, and varieties showeddifferent responsesto the O3treatments.O3 exposure and uptake expressedas ‘AOT40s’ for treatments (lines) and ‘POD6s’ for varieties in treatmentsbased on measured conductances, plant development, and O3concentrations. The treatment-induced need for stomatal opening is clearly reflected in uptake as well as in variety differences.Bittern Lantve te0.010.020.030.040.050.060.070.00.05.010.015.020.025.0Bittern Lantvete Lennox WL BitternAOT40POD6AA.EOA.O3C.EOCTCT.EOCT.O3T.EOC.EO AOT400.0040.0060.0080.010.0120.0140.016A A.EO A.O3 C.EO CT CT.EO CT.O3 T.EOCO2 assimilated/ H2O transpiredb, ca b b b, cb, cb, ca, c a b, c b, c b, c b, ca, ba, b cA A.EO A.O3 C.EO CT CT.EO CT.O3 T.EO50100150Bittern 15 Days After SowingA A.EO A.O3 C.EO CT CT.EO CT.O3 T.EO50100150Lantvete 73 Days After SowingA A.EO A.O3 C.EO CT CT.EO CT.O3 T.EO50100150Lantvete 43 Days After SowingA A.EO A.O3 C.EO CT CT.EO CT.O3 T.EO50100150Lantvete 15 Days After SowingA A.EO A.O3 C.EO CT CT.EO CT.O3 T.EO50100150Lennox 43 Days After SowingA A.EO A.O3 C.EO CT CT.EO CT.O3 T.EO50100150Lennox 15 Days After SowingTreatment 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16CT.O3T.EOA.E0A.O3C.EOCTCT.E0A00.00050.0010.00150.0020.0025A A.EO A.O3 C.EO CT CT.EO CT.O3 T.EOYield dry matter g/ H2O gPlant height, cmPlant height, cmPlant height, cma, c, dc, d, ea, b, c a, b, c d, e e a, b ba a, b d b, ca ab, ccA A.EO A.O3 C.EO CT CT.EO CT.O3 T.EO50100150Bittern 73 Days After Sowingeb, dba c a, c d da, b a b a, b c c cda a ab, c a, b c d dca a aa, b a, b a, bbaa a a b bc b, cba a, b a, b bbc dA A.EO A.O3 C.EO CT CT.EO CT.O3 T.EO50100150Lennox 73 Days After Sowingb, ca ad b b b, c cA A.EO A.O3 C CT CT.EO T WLA.O32030405060BitternDry matter yield, g/pota b, c b, de eec, e c, e c, ec, d, e(1) RUC Roskilde university, Department of People and Technology, DK-4000 Roskilde, Denmark. (2) US1116 AGROCLIM, INRA, Centre de Recherche PACA, 84914 Avignon Cedex 9, France. (3) Atmospheric Environment, DTU Environmental engineering, Technical University of Denmark, DK - 2800 Kgs. Lyngby, Denmark Summary: Spring wheat variety and O3-regime interact with the climatetreatments to determine yield under ambient and warmer climates; modernvarieties display strong reduction of yield under ambient conditions wherethe landrace variety yield is equally reduced under episodic as well as chronicO3-exposure. At the warmer treatments O3-impact is less distinctly exhibitedby variety and O3-regime. The focus of this experiment was to investigate the growth and yield of three wheat varieties grown under different climatic and O3–exposure conditions. Literature:Spring wheat seeds were kindly provided by Saaten-Union , DanishAgro and www.nordgen.org

Variable O<sub>3</sub> episodes’ influence on yield and physiology in old and new wheat varieties under a climate change regime with elevated temperature and CO<sub>2</sub> levels

http://orbit.dtu.dk/ws/files/150213971/Ozone_Poster.pdf

Variable O<sub>3</sub> episodes’ influence on yield and physiology in old and new wheat varieties under a climate change regime with elevated temperature and CO<sub>2</sub> levels

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