Field studies on the interaction of heat stress and elevated atmospheric CO2 concentrations on growth and grain development of wheat
Recent modeling studies addressing the effect of future climate change on wheat revealed that drought stress and especially heat stress will substantially impair the yield stability of wheat not only in Germany and Europe but also on a global level. The algorithm in the model for the assessment of the heat stress effect on total plant and especially on grain growth is based on previous experimental studies done in controlled environment chambers or in green houses. Field studies with simultaneo
The objective is to improve the quantification of the effect of high temperature or heat stress on grain yield components. In addition, it will be investigated, whether increasing CO2 concentrations enhances or mitigates these effects of high temperature or heat stress on grain yield. Heat stress will be applied during anthesis, since wheat seems to be most sensible to heat during this period.
Experimental results will be provided to the scientific community. In addition, data will be made available to different modelling teams for improving their models.
Field experiments will be carried out, in which wheat plants are exposed to elevated temperature and also to elevated CO2 concentration under sufficient water supply.
Crop growth will be measured during the vegetation period. In addition surface temperature of the whole canopy and individual organs (leaf, ear) will be measured.
4.2012 - 9.2018
Project funding number: MA 1736/3-1
Project status: ongoing