Rapid reprogramming and stabilisation of homoeolog expression bias in hexaploid wheat biparental populations

Differences in the relative level of expression of homoeologs, known as homoeolog expression bias (HEB), are widely observed in allopolyploids. While the evolution of homoeolog expression bias through hybridisation has been characterised, on shorter timescales the extent to which homoeolog expression bias is preserved or altered between generations remains elusive.