This paper aims to provide a robust regional synthesis of crop diffusion in the southern Levant, with the objective of ascertaining the significance of 1st millennium ce introductions, including those associated with Roman Agricultural Diffusion (RAD) and the Islamic Green Revolution (IGR). It does so by integrating published archaeobotanical data and written evidence from multiple periods to identify the earliest attestations...

To breed for climate resilient crops, an understanding of the genetic and environmental factors influencing adaptation is critical. Barley provides a model species to study adaptation to climate change. Here we present a detailed analysis of genetic variation at a major photoperiod response locus and relate this to the domestication history and dispersal of barley. The PPD-H1 locus (a PSEUDO-RESPONSE REGULATOR 7 ) promotes flo...