International Database for Barley Genes and Barley Genetic Stocks
BGS 713, Reaction to Pyrenophora teres 6, Rpt6
Stock number: BGS 713
Locus name: Reaction to Pyrenophora teres 6
Locus symbol: Rpt6
Previous nomenclature and gene symbolization:
Monofactorial dominant (1).
Located in chromosome 5HL (1), Rpt6.g is located within 1.5 cM of microsatellite marker HVLUE, which located in the proximal region of the long arm (1).
The seedling reactions of CIho 9819 to Pyrenophora teres f. maculata (Ptm) isolates ranged from 2 to 6 on a scale where 1 = very resistant and 10 = very susceptible (1). The Rpt6.g gene of CIho 9819 from Ethiopia confers isolate specific resistance to Ptm (1). CIho 9819 was resistant to two Ptm isolates from Finland, but not to the isolate from the Czech Republic (1). A QTL for adult plant resistance to Ptm from Galleon and VB 9104 was mapped in the short arm of 5H (2), and is probably independent of the Rpt6 locus.
Origin of mutant:
Natural occurrence in CIho 9819 (PI 195985) collected from Welo, Ethiopia (1).
Rpt6.g from CIho 9819 (PI 195985) collected from Welo, Ethiopia (1).
Mutant used for description and seed stocks:
Rpt6.g in CIho 9819.
1. Manninen, O.M., M. Jalli, R. Kalendar, A. Schulman, O. Afanasenko, and J. Robinson. 2006. Mapping of major spot-type and net-type net-blotch resistance genes in Ethiopian barley line CI 9819. Genome 49:1564-1571.
2. Williams, K.J., G.J. Platz, A.R. Barr, J. Cheong, K. Willsmore, M. Cakir, and H. Wallwork. 2003. A comparison of the genetics of seedling and adult plant resistance to the spot form of net blotch (Pyrenophora teres f. maculata). Aust. J. Agric. Res. 54:1387-1394.
J.D. Franckowiak and G.J. Platz. 2013. Barley Genet. Newsl. 43:210.