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Effect of heat stress at anthesis on yield formation in winter wheat
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SYSNO ASEP 0480342 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Effect of heat stress at anthesis on yield formation in winter wheat Author(s) Hlaváčová, Marcela (UEK-B) RID, SAI, ORCID
Klem, Karel (UEK-B) RID, ORCID, SAI
Smutná, P. (CZ)
Škarpa, P. (CZ)
Hlavinka, Petr (UEK-B) RID, ORCID, SAI
Surá, Kateřina (UEK-B) RID, SAI, ORCID
Rapantová, Barbora (UEK-B) RID, SAI
Trnka, Miroslav (UEK-B) RID, ORCID, SAISource Title Plant, Soil and Environment. - : Česká akademie zemědělských věd - ISSN 1214-1178
Roč. 63, č. 3 (2017), s. 139-144Number of pages 6 s. Language eng - English Country CZ - Czech Republic Keywords high temperature stress ; grains number per spike ; spike productivity ; phytotron ; Triticum aestivum L. Subject RIV EH - Ecology, Behaviour OECD category Environmental sciences (social aspects to be 5.7) Institutional support RVO:67179843 - RVO:67179843 UT WOS 000398069400007 EID SCOPUS 85017541436 DOI 10.17221/73/2017-PSE Annotation Heat stress around anthesis is considered to have an increasing impact on wheat yield under the ongoing climate
change. However, the effect of high temperatures and their duration on formation of individual yield parameters is
still little understood. Within this study, the effect of high temperatures applied during anthesis for 3 and 7 days on
yield formation parameters was analysed. The study was conducted in growth chambers under four temperature
regimes (daily temperature maxima 26, 32, 35 and 38°C). In the periods preceding and following heat stress regimes
the plants were cultivated under ambient weather conditions. The number of grains per spike was reduced under
temperatures ≥ 35°C in cv. Bohemia and ≥ 38°C in cv. Tobak. This resulted in a similar response of spike productivity.
Thousand grain weight showed no response to temperature regime in cv. Tobak, whereas in cv. Bohemia, a peak
response to temperature with maximum at 35°C was observed. The duration of heat stress had only little effect on
most yield formation parameters.Workplace Global Change Research Institute Contact Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268 Year of Publishing 2018
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