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. 2026 Sep 14;17:1826616. doi: 10.3389/fpls.2026.1826616

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Copyright © 2026 Buffagni, Danzi, Ramirez-Gonzalez, Uauy, Gullì, Simmonds, Petrozza, Cellini, Summerer, Pignone, Janni and Marmiroli.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Map highlighting countries in North Africa, the Middle East, and parts of Europe with colored ovals representing genotypes of wheat based on haplotype combinations. An inset shows the United States with similar genotype markers. A legend associates numbers, colors, and shapes with specific SNPs, haplotype combinations, and genotypes. Red shading marks regions where these genotypes were identified. — Distribution of SSDs evaluated for their drought tolerance with HTTP. SSDs are positioned on the map according to their country of origin. Each SSD is presented with an oval, which is differently colored according to the haplotype combination of TdBCAT-A and TdBCAT-B promoters.