Supplementary Information

The Supplementary Material for this article can be found online at: https://www.frontiersin.org/articles/10.3389/fpls.2018.00509/full#supplementary-material

Figure S1. Chromosomal configurations with single chiasma or double chiasmata highlighted with arrows. These structures marked by an arrow were counted as either single or double chiasmata in all analyzed meiocytes. Both datasets are shown in all analyzed genotypes. Bar: 20 μm.

Figure S2. Representative meiotic configurations of Triticum aestivum cv. Cadenza (Cad1691-Tazip4-B2 mutant)-Ae. variabilis (A) and Triticum aestivum cv. Cadenza (Cad0348-Tazip4-B2 mutant)-Ae. variabilis (B) and wheat Tazip4-B2 CRISPR mutant-Ae. variabilis mutant (C) hybrids. From left to right: water alone, treated with either 1 mM Mg2+ or Hoagland solution. Bar: 20 μm.

Table S1. Genotypes and number of plants used for analyzing the effect of a nutrient solution in homoeologous CO frequency in wheat and its relative species.

Table S2. Frequencies of univalents, bivalents, multivalents and chiasma frequency (single and double chiasmata) were scored at meiotic metaphase I in wheat Tazip4-B2 CRISPR mutant-Ae. variabilis hybrids. Values in parenthesis indicate range of variation between cells. P < 0.05 indicates significant differences according to Dunn's test. Different letters indicate significant differences between treatments.