Coordinator's report:Wheat-barley genetic stocks
A.K.M.R. Islam
Department of Plant Science, Waite Agricultural Research Institute, The University of Adelaide, Glen Osmond, S.A. 5064, Australia.

There is little new information to report for wheat-barley genetic stocks since the last report. It has been reported in the Coordinators report of Barley Genetics Newsletter Volume 22 that "the missing wheat-barley addition line 1H could not be obtained as a self-fertile addition line because of the male-sterility induced by the presence of barley 1HL arm in the wheat background and the line can be maintained as a self-sterile double monosomic 1H, 6H addition by repeated backcrossing to wheat and selecting for double monosomics in each generation". Islam (unpublished) recently produced a self-fertile plant involving barley chromosome 1H by adding one more dose of barley chromosome 6H to this double monosomic. This 45-chromosome plant has the full complement of wheat chromosomes plus a pair barley chromosome 6H and a single dose of barley chromosome 1H. Thus two doses of barley chromosome 6H can overcome the genetic male-sterility induced by barley chromosome arm 1HL and it is possible to maintain chromosome 1H as a fertile monosomic addition in a disomic 6H addition background.