Branching patterns across the three locations. A heat map was generated to visualize the type of branching in the same lines across all the three locations. Shown in columns are the number of branches in the 1st quarter (1), 2nd quarter (2), 3rd quarter (3), 4th quarter (4), and secondary branches (2B). Each row displays data for an individual line. Lines have been color coded according to their branching pattern. Color codes are described on the figure; the gradation of color from left to right indicates no branches (or fewer branches in case of whole plant branching) to maximum number of branches observed for a particular type within that location. Lines have been grouped together according to the branching pattern exhibited in Georgia (GA); corresponding lines in Iowa (IA) and British Columbia (BC) are matched up against their position in the GA columns, emphasizing variation across location.