The effect of different post-anthesis water supply on the carbon isotope discrimination of winter wheat grain

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00027006%3A_____%2F16%3A00003676" target="_blank" >RIV/00027006:_____/16:00003676 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.17221/118/2016-PSE" target="_blank" >http://dx.doi.org/10.17221/118/2016-PSE</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.17221/118/2016-PSE" target="_blank" >10.17221/118/2016-PSE</a>

Result language
angličtina
Original language name
The effect of different post-anthesis water supply on the carbon isotope discrimination of winter wheat grain
Original language description
Isotopic carbon discrimination (delta 13C) of winter wheat grain grown under different water and nitrogen supplies was determined. In two field experiments during years 2004–2007 (A) and 2008–2013 (B), a water shortage was induced from the flowering stage on with a mobile shelter (S), while an optimal water supply was ensured with drip irrigation (I), and a rain-fed crop served as the control treatment (R). Water supply had a statistically significant effect on grain 13C values in both experiments (P < 0.01). The average values of grain 13C in treatments I, R and S were 19.43, 18.68 and 17.70‰ (A); and 20.36, 19.60 and 18.13‰ (B). Grain 13C was in a significant linear relationship (P < 0.01) with the amount of water supplied by precipitation or irrigation. The regressions suggested that grain 13C increased by 1.14‰ and 1.16‰ (A), and 0.98‰ or 0.96‰ (B) for every 100 mm of water from January and March, respectively, until the early dough stage (r = 0.79–0.74, P < 0.05). Pooled data for the whole period 2004–2013 showed increases of 1.06‰ and 1.08‰ (r = 0.91 and 0.82, P < 0.05) for 100 mm of water, respectively. The results of the experiment confirmed the stable and predictable effect of water supply on wheat grain 13C.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
GD - Fertilization, irrigation, soil treatment
OECD FORD branch
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Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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