Identification of the genetic variation between the genotypes of wheat and barley yield from the results of the first year or through the first generation in the case of hybridization between selected genotypes .
I believe AFLP (Amplified Fragment Length Polymorphism, look for Thum et al. 2012) and ISSR (Inter Simple Sequence Repeats, Pradeep et al. 2002) could provide some insights on that matter.