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. 2016 Mar 24;67(9):2787–2798. doi: 10.1093/jxb/erw116

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© The Author 2016. Published by Oxford University Press on behalf of the Society for Experimental Biology.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Fig. 3. — Linear regression of the relationship between the stable carbon isotope composition in mature grains (δ¹³C_grain) and (A) the combination of δ¹³C from awns and the peduncle (δ¹³C_{peduncle+awns}) in the water-soluble fraction (WSF) (R²=0.44, P<0.001) and (B) the combination of δ¹³C from awns and glumes and the peduncle (δ¹³C_{peduncle+[awns+glumes]}) in the water-soluble fraction (WSF) (R²=0.40, P<0.001) during the 2012 and 2013 crop seasons. For the 2012 season only data before irrigation were used. In 2013 a CF of 0.8 ‰ was applied. Other details as in Fig. 2. The experiment was performed under field conditions at the CIMMYT’s Experimental Station, Norman E. Borlaug (CENEB), under fully irrigated conditions.