Go to plants.ensembl.org and click on the link Tools at the top of the page. Click on BioMart.

Click New. Choose the Ensembl Plants Genes database. Choose the Hordeum vulgare genes (MorexV3_pseudomolecules_assembly) dataset.

Click on Filters in the left panel. Expand the GENE section by clicking on the + box. Enter the gene list in the Input external references ID list box. Select Gene stable ID(s) [e.g. HORVU.MOREX.r3.1HG0000030] from the drop-down menu.

Click on Attributes in the left panel. Select the Homologues attributes page. Expand the ORTHOLOGUES section by clicking on the + box. Select Triticum aestivum gene stable ID.

Click Results.