diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index d825bf94fa..341b3528ad 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -21,6 +21,11 @@ jobs:
 
       - name: Get the sgn repo
         uses: actions/checkout@v2
+        
+      - name: Extract branch name
+        shell: bash
+        run: echo ::set-output name=branch::$(echo ${GITHUB_REF#refs/heads/})
+        id: extract_branch
 
       - name: Get breedbase_dockerfile
         if: startsWith(steps.extract_branch.outputs.branch, 'feature/') || startsWith(steps.extract_branch.outputs.branch, 'bug/')
@@ -154,4 +159,4 @@ jobs:
         run: /entrypoint.sh --nopatch t/selenium2/stock 2>/dev/null
 
       - name: Run selenium tests tools
-        run: /entrypoint.sh --nopatch t/selenium2/tools 2>/dev/null
\ No newline at end of file
+        run: /entrypoint.sh --nopatch t/selenium2/tools 2>/dev/null
diff --git a/lib/CXGN/BrAPI/v2/ObservationUnits.pm b/lib/CXGN/BrAPI/v2/ObservationUnits.pm
index 185cc6b4ef..244ebc2430 100644
--- a/lib/CXGN/BrAPI/v2/ObservationUnits.pm
+++ b/lib/CXGN/BrAPI/v2/ObservationUnits.pm
@@ -45,6 +45,8 @@ sub search {
     my $level_code_arrayref = $params->{observationUnitLevelCode} || ($params->{observationUnitLevelCodes} || ());
     my $levels_relation_arrayref = $params->{observationLevelRelationships} || ();
     my $levels_arrayref = $params->{observationLevels} || ();
+    my $reference_ids_arrayref = $params->{externalReferenceId} || $params->{externalReferenceID} || ($params->{externalReferenceIds} || $params->{externalReferenceIDs} || ());
+    my $reference_sources_arrayref = $params->{externalReferenceSource} || ($params->{externalReferenceSources} || ());
 
 
     my $additional_info_type_id = SGN::Model::Cvterm->get_cvterm_row($self->bcs_schema, 'phenotype_additional_info', 'phenotype_property')->cvterm_id();
@@ -93,6 +95,8 @@ sub search {
             # Order by plot_number, account for non-numeric plot numbers
             order_by=>'NULLIF(regexp_replace(plot_number, \'\D\', \'\', \'g\'), \'\')::int',
             observation_unit_names_list=>$observation_unit_names_list,
+            xref_id_list=>$reference_ids_arrayref,
+            xref_source_list=>$reference_sources_arrayref
             # phenotype_min_value=>$phenotype_min_value,
             # phenotype_max_value=>$phenotype_max_value,
             # exclude_phenotype_outlier=>$exclude_phenotype_outlier
diff --git a/lib/CXGN/Phenotypes/Search/MaterializedViewTable.pm b/lib/CXGN/Phenotypes/Search/MaterializedViewTable.pm
index 8ce76d5d93..4852e2e2f1 100644
--- a/lib/CXGN/Phenotypes/Search/MaterializedViewTable.pm
+++ b/lib/CXGN/Phenotypes/Search/MaterializedViewTable.pm
@@ -117,6 +117,16 @@ has 'observation_unit_names_list' => (
     is => 'rw',
 );
 
+has 'xref_id_list' => (
+    isa => 'ArrayRef[Str]|Undef',
+    is => 'rw',
+);
+
+has 'xref_source_list' => (
+    isa => 'ArrayRef[Str]|Undef',
+    is => 'rw',
+);
+
 has 'exclude_phenotype_outlier' => (
     isa => 'Bool|Undef',
     is => 'ro',
@@ -170,7 +180,16 @@ sub search {
     my $stock_lookup = CXGN::Stock::StockLookup->new({ schema => $schema} );
     my %synonym_hash_lookup = %{$stock_lookup->get_synonym_hash_lookup()};
 
-    my $select_clause = "SELECT observationunit_stock_id, observationunit_uniquename, observationunit_type_name, germplasm_uniquename, germplasm_stock_id, rep, block, plot_number, row_number, col_number, plant_number, is_a_control, notes, trial_id, trial_name, trial_description, plot_width, plot_length, field_size, field_trial_is_planned_to_be_genotyped, field_trial_is_planned_to_cross, breeding_program_id, breeding_program_name, breeding_program_description, year, design, location_id, planting_date, harvest_date, folder_id, folder_name, folder_description, seedlot_transaction, seedlot_stock_id, seedlot_uniquename, seedlot_current_weight_gram, seedlot_current_count, seedlot_box_name, available_germplasm_seedlots, treatments, observations, count(observationunit_stock_id) OVER() AS full_count FROM materialized_phenotype_jsonb_table ";
+    my $select_clause = "SELECT observationunit_stock_id, observationunit_uniquename, observationunit_type_name, germplasm_uniquename, germplasm_stock_id, rep, block, plot_number, row_number, col_number, plant_number, is_a_control, notes, trial_id, trial_name, trial_description, plot_width, plot_length, field_size, field_trial_is_planned_to_be_genotyped, field_trial_is_planned_to_cross, breeding_program_id, breeding_program_name, breeding_program_description, year, design, location_id, planting_date, harvest_date, folder_id, folder_name, folder_description, seedlot_transaction, seedlot_stock_id, seedlot_uniquename, seedlot_current_weight_gram, seedlot_current_count, seedlot_box_name, available_germplasm_seedlots, treatments, observations, count(observationunit_stock_id) OVER() AS full_count FROM materialized_phenotype_jsonb_table
+                         LEFT JOIN (
+                            select stock.stock_id, array_agg(db.name)::text[] as xref_sources, array_agg(dbxref.accession)::text[] as xref_ids
+                            from stock
+                            join stock_dbxref sd on stock.stock_id = sd.stock_id
+                            join dbxref on sd.dbxref_id = dbxref.dbxref_id
+                            join db on dbxref.db_id = db.db_id
+                            group by stock.stock_id
+                         ) xref on xref.stock_id = materialized_phenotype_jsonb_table.observationunit_stock_id
+                        ";
     my $order_clause = $self->order_by ? " ORDER BY ".$self->order_by : " ORDER BY trial_name, observationunit_uniquename";
 
     my @where_clause;
@@ -196,6 +215,12 @@ sub search {
     } elsif ($self->subplot_list && scalar(@{$self->subplot_list})>0) {
         my $subplot_sql = _sql_from_arrayref($self->subplot_list);
         push @where_clause, "observationunit_stock_id in ($subplot_sql)";
+    } elsif ($self->xref_id_list && scalar(@{$self->xref_id_list})>0) {
+        my $xref_id_sql = _sql_from_arrayref($self->xref_id_list);
+        push @where_clause, "xref.xref_ids && '{$xref_id_sql}'";
+    } elsif ($self->xref_source_list && scalar(@{$self->xref_source_list})>0) {
+        my $xref_source_sql = _sql_from_arrayref($self->xref_source_list);
+        push @where_clause, "xref.xref_sources && '{$xref_source_sql}'";
     }
 
     if ($self->trial_list && scalar(@{$self->trial_list})>0) {