The Steptoe x Morex doubled haploid barley mapping population
A population of 150 barley (Hordeum vulgare L.) doubled haploid
(DH) lines was developed by the Oregon State University Barley Breeding
Program for the North American Barley Genome Mapping Project (NABGMP). The
parentage of the population is "Steptoe"/ "Morex". Steptoe is a high
yielding, broadly adapted six-row Coast-type feed barley selected from the
cross of "WA3564/"Unitan" (Muir and Nilan, 1973). "Morex", a midwestern
six-row Manchurian-type, is the North American six-row malting quality
standard. It was developed at the University of Minnesota from the cross
of "Cree/"Bonanza" (Rasmusson and Wilcoxson, 1979). Seed from a single
head of each parent, supplied by Dr. D. Hoffman, USDA/ARS, Aberdeen, Idaho,
was used to generate the F1. A population of 310 DH lines was developed
from the F1 by the Hordeum bulbosum technique, as described by Chen and
Hayes (1989), and the final set of 150 lines was selected at random from
this array.
Chen, F., and P.M. Hayes. 1989. A comparison of Hordeum bulbosum-mediated
haploid production efficiency in barley using in vitro floret and tiller
culture. Theor. Appl. Genet. 77:701-704.
Muir, C.E., and R.A. Nilan. 1973. Registration of Steptoe barley. Crop Sci
13:770.
Rasmusson, D.C., and R.D. Wilcoxson. 1979. Registration of Morex barley.
Crop Sci 19:293.
Pedigree list