Figure 1.

Barley inflorescence architecture and known genetic pathways controlling row‐type phenotypes (A) Mature inflorescences of two‐rowed and six‐rowed barley inflorescences. (B) Schematic diagram of a triple spikelet structure with a central spikelet and two lateral spikelets displaying known interactions of genetic pathways regulating row‐type architecture in barley. The purple and blue sections indicate localized expression of Vrs1 and Vrs4, respectively, within the lateral spikelet primordia that encode proteins to suppress its fertility. Arrows indicate positive transcriptional effects. VRS1‐5 proteins all repress lateral spikelet development.