The interactive effects of elevated CO2 concentration, nitrogen nutrition and timing of drought stress on wheat grain yield and quality in two genotypes with contrasting length of vegetation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F62156489%3A43210%2F20%3A43919523" target="_blank" >RIV/62156489:43210/20:43919523 - isvavai.cz</a>

Výsledek na webu

<a href="https://mnet.mendelu.cz/mendelnet2020/mnet_2020_full.pdf" target="_blank" >https://mnet.mendelu.cz/mendelnet2020/mnet_2020_full.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The interactive effects of elevated CO2 concentration, nitrogen nutrition and timing of drought stress on wheat grain yield and quality in two genotypes with contrasting length of vegetation

Popis výsledku v původním jazyce

Ongoing climate change brings not only long-term effects which are represented mainly by elevated atmospheric CO2 concentration and gradual increase in mean temperature, but also by increasing the extremity of the weather, which means, for example, higher frequency, higher intensity and longer periods of drought. In this study, the effect of elevated CO2 concentration in combination with nitrogen nutrition and drought was studied in two contrasting genotypes of winter wheat in terms of vegetation length. The results showed that drought in the period after heading generally had a greater effect on yield, while drought before the start of heading had a greater impact on gluten content in grain. The elevated CO2 concentration partly alleviated the negative effect of the late drought. Conversely, under early drought, elevated CO2 concentration led to a partial amplification of the drought effect on yield. Although a greater effect on gluten content was observed under the early drought, the combination of late drought and elevated CO2 concentration showed a higher impact than under the combination with early drought. The application of nitrogen partly mitigated the negative effect of drought on gluten content in both droughts. The response of the varieties to the experimental factors are very similar, although it is evident that the late variety Tobak shows slightly higher sensitivity to early drought. It is clear from the results that the timing of drought determines not only the yield reduction and the impact on quality but also the interactions with other factors such as atmospheric CO2 concentration, nitrogen nutrition or genotype.

Název v anglickém jazyce

The interactive effects of elevated CO2 concentration, nitrogen nutrition and timing of drought stress on wheat grain yield and quality in two genotypes with contrasting length of vegetation

Popis výsledku anglicky

Ongoing climate change brings not only long-term effects which are represented mainly by elevated atmospheric CO2 concentration and gradual increase in mean temperature, but also by increasing the extremity of the weather, which means, for example, higher frequency, higher intensity and longer periods of drought. In this study, the effect of elevated CO2 concentration in combination with nitrogen nutrition and drought was studied in two contrasting genotypes of winter wheat in terms of vegetation length. The results showed that drought in the period after heading generally had a greater effect on yield, while drought before the start of heading had a greater impact on gluten content in grain. The elevated CO2 concentration partly alleviated the negative effect of the late drought. Conversely, under early drought, elevated CO2 concentration led to a partial amplification of the drought effect on yield. Although a greater effect on gluten content was observed under the early drought, the combination of late drought and elevated CO2 concentration showed a higher impact than under the combination with early drought. The application of nitrogen partly mitigated the negative effect of drought on gluten content in both droughts. The response of the varieties to the experimental factors are very similar, although it is evident that the late variety Tobak shows slightly higher sensitivity to early drought. It is clear from the results that the timing of drought determines not only the yield reduction and the impact on quality but also the interactions with other factors such as atmospheric CO2 concentration, nitrogen nutrition or genotype.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

40106 - Agronomy, plant breeding and plant protection; (Agricultural biotechnology to be 4.4)

Projekt

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Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2020

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

MendelNet 2020: Proceedings of International PhD Students Conference

ISBN

978-80-7509-765-1

ISSN

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e-ISSN

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Počet stran výsledku

4

Strana od-do

64-67

Název nakladatele

Mendelova univerzita v Brně

Místo vydání

Brno

Místo konání akce

Brno

Datum konání akce

11. 11. 2020

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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