There is little new information to report for wheat-barley genetic stocks since the last report. Taketa et al (1998) studied genetic variation in crossability of barley with wheat using 80 barley accessions of diverse geographical origin including wild barley crossed with a highly crossable wheat "Shinchunaga". They found that barley accessions from East Asia had generally a low crossability whereas accessions from other regions exhibited a much wider range of crossability. Using Quantitative trait loci (QTL) analysis with barley doubled haploid populations crossed as the male parent with wheat, they identified 4 QTL which mapped to the centromeric regions of barley chromosomes 2H, 3H, 5H and the short arm of 7H.

Reference:

Taketa, S., H.Takahashi, and K.Takeda. 1998. Genetic variation in barley of crossability with wheat and its quantitative trait loci analysis. Euphytica.103:187-193.