Some molecular markers have been mapped to barley chromosome 2. A copy of exon 3-intron 3 from the barley aleurain gene was mapped to chromosome 2 (Li et al., 1991). The SS-RNA genes of barley were located on chromosome 2 by use of wheat-barley additional line (Kolchinsky et al., 1990).
Mapping of the yellow leaf stripe mutant geneyst3 has been attempted for many years. Recently, yst3 was determined to be on chromosome 2 (Wang, 1992). However, since the possible abnormal genetic structure of the telotrisomics 2S or 2L, the gene-arm association could not be confirmed.
Several genes on chromosome 2 have been incorporated into the multiple morphological marker stocks, which were developed by Wolfe and Franckowiak (1991). Those genes were e, Ea, and msg2 in short arm of chromosome 2; G, Pc, Re2, Vt, v, wst,,k, and Zeo (Knd) on long arm of chromosome 2.
References:
Kolchinsky, L., V. Kanazin, E. Yakovleva, A. Gazumyan, E. Kole, and E. Ananiev. 1990. 5S-RNA genes of barley are located on the second chromosome. Theor. Appl. Genet. 80:333-336.
Li, X., Y. S. W. Rogers, and J. C. Rogers. 1991. A copy of exon 3-intro 3 from the barley aleurain gene is present on chromosome 3. Plant Molecules Biology 17(3):509-512.
Wang, S. 1992. Primary trisomic analysis of the yellow stripe 3 (yst3) gene in barley. BGN 91:73-74.
Wolfe, R. I., and J. D. Franckowiak. 1991. Multiple dominant and recessive genetic marker stocks in spring barley. BGN 20:117-122.