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  • 1 Czech University of Life Sciences Prague Department of Botany and Plant Physiology Kamýcká 129 165 21 Prague 6 - Suchdol Czech Republic
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One of the ways of reducing energy-intensive inputs to agricultural systems is to replace the less performing cultivars with more productive ones and to cultivate varieties with sufficient accumulation capabilities of sink even under worse environmental conditions, for example, in the event of aridisation of the environment. The cultivation process is managed in such a way so that the largest share of the total production of all the plant biomass is represented by the organs providing the actual economic yield. From the results there is a clear difference between the Czech variety Malz and the Dutch Jersey in the formation of spike under the effect of water stress. For the Malz variety the number of grains in the spike dropped by 17.5% compensated for by their increased weight. For the Jersey variety there was a 16.7% fall in the number of grains in the spike, but no compensation in the increased weight of the grains was observed.

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