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. 2020 Mar 19;11:195. doi: 10.3389/fpls.2020.00195

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Copyright © 2020 Muñoz-Sanz, Zuriaga, Cruz-García, McClure and Romero

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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Interspecific Reproductive Barriers (IRBs) in Solanum. (A) Compatibility and incompatibility between S. lycopersicum and red- and green-fruited wild Solanum species. Direction of compatible and incompatible crosses is indicated by green arrowed and red lines, respectively. (B) Modification of IRBs in Solanum by introducing (+T) and/or knocking out (-T) pistil and pollen factors. Each modified IRB is indicated and referred: [1]Tovar-Méndez et al., 2014; [2] Tovar-Méndez et al., 2017; [3] Li and Chetelat, 2010; [4] Li and Chetelat, 2015; [5] Qin et al., 2018. Pollen and pistil transgenes are orange-colored. SC, self-compatible; SI, self-incompatible; FPS2, Farnesyl pyrophosphatase synthase gene; SRN, S-RNase gene; SLF, S-locus F-box gene; HT, HT gene; Sp, Solanum pennellii; Sa, Solanum arcanum.