Srpl (Loegering, 1975).
Low Infection Type
;2- (Roelfs and McVey, 1979).
Common wheat cv. Chinese Spring.
Most P. graminis f. sp. tritici isolates are virulent.
v: Chinese Spring; the contrasting line lacking Sr9f is ISr9a-Ra C.I.14169 (Loegering, 1975).
Use in Agriculture
Wheat possesses many resistance genes such as Sr9f that can be detected with laboratory cultures possessing unusual genes for avirulence. Most of these genes are not catalogued and are of little agricultural importance.