Table 4. Adult field reaction to rust on uniform regional hard red spring wheat entries, in
the 1972 Fargo rust nursery. (North Dakota-ARS).
Seeded: June 1, 1972
Percent severity and reaction 1
Variety or ------------------------------
State No. Leaf rust 2 Stem rust 3
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MARQUIS 50S 40S,O
JUSTIN 20S 0
SELKIRK 25S-20MR O,tS
CHRIS 25MS-5MR 0
WALDRON tMS O,tS
ND491 tMS 5MR*
ND506 tMS 5MR*
ND507 tR O,tMS
ND509 5S 0
ND511 tMR tMR*
ND515 5S 5MR*
ND510 tR 5MR*
RL4238 30S-lOMR O,tS*
MT661718 50S 0
ERA** 10MS-10MR, 0
II-64-27** tR 0
II-64-33** 1OR 0
MN6601** 10R-5MS 0
ND497** O-tMS 0
ND499** tR 0
ND508** 0 0
MT7042** 50S 0,tS
FBAO04** 0 0
FBW406** tR 0
FBW434** 10R tMR*
PROTOR** 30R-5MS 5MR*
H678-1-6-9** 10s tMS-0
H689-5-5 30S ts-0
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** Semidwarf
1 = Coma - Separation of plants into 2 or more reaction classes. Segregation or seed mixture.
Dash - Range in reaction on each plant. Range in severity between plants but same
reaction class.
2 = Natural inoculum. Readings made on flag leaf and flag leaf minus 1. Most entries were in
the soft dough stage of plant development.
3 = Natural inoculum in addition to inoculations of race 15B.
Readings were made when most entries were in the soft dough stage of plant development.
* Rust on neck and/or near nodes.
NOTE: 1 - Late planting of spreader rows shortened the period for rust development.
2 - High temperature in August forced plants to maturity. This may have affected the stem
rust severity on susceptible entries.