Canadian Wheat, Barley, and Canadian Wheat, Barley, and Oat Stem Rust in 2006Oat Stem Rust in 2006
Dr. Tom FetchDr. Tom Fetch
Cereal Research CentreCereal Research Centre
Agriculture & Agri-Food CanadaAgriculture & Agri-Food Canada
Winnipeg, MBWinnipeg, MB
Environmental conditionsEnvironmental conditions• Weather conditions in 2006 were
unfavorable for development of rust
• Above average temperatures with very dry to near normal precipitation occurred in the Prairie region
• Only trace amounts of stem rust were found throughout the “Rust area”
Rust area in western Rust area in western CanadaCanada
SK MB
AB
Virulence of Stem RustVirulence of Stem Rust
The stem rust population is surveyed annually to The stem rust population is surveyed annually to detect changes in virulence that may signify the detect changes in virulence that may signify the appearance of new dangerous races. Samples are appearance of new dangerous races. Samples are collected from production fields and trap nurseries collected from production fields and trap nurseries of wheat, barley, and oat in the “Rust area” of of wheat, barley, and oat in the “Rust area” of Manitoba and eastern Saskatchewan. Samples Manitoba and eastern Saskatchewan. Samples also are obtained from trap nurseries across also are obtained from trap nurseries across Canada through collaborators.Canada through collaborators.
Virulence determinationVirulence determination
• Used standard inoculation methods and the letter nomenclature of Roelfs and Martens (1988) for wheat
• Used same inoculation methods for oat, but now changed to new letter code (Fetch & Jin, 2007) adapted from Roelfs and Martens
LLetter code system for wheatetter code system for wheatSr5 Sr21 Sr9e Sr7bSr11 Sr6 Sr8a Sr9gSr36 Sr9b Sr30 Sr17
PGT Sr9a Sr9d Sr10 SrTmpcode Sr7a Sr8b Sr13 SrMcN
B L L L LC L L L HD L L H LF L L H HG L H L LH L H L HJ L H H LK L H H HL H L L LM H L L HN H L H LP H L H HQ H H L LR H H L HS H H H LT H H H H
Set 1Set 2Set 3Set 4Set 5
Stem Rust Races on wheat in MB
7 415 9
4
15 15
1
25
100 100
27
11
57100
218
17
14
1
70
95
46 40
1
0
20
40
60
80
100
1999 2000 2001 2002 2003 2004 2005 2006
QCCJ D QCCJ L QCCJ N QFCSH QFCSK QFCSR
RCCJ L RCCJ N RCMSR RCRSK RMRSK RRRSK
Stem Rust Races on cultivated barley in MB
6
372223 6
2
2
6
63
53
1931
3
100 100
1
9
100
24
1
4
10
13
22
1438
6
22
25
7
38
6 2 2
0
20
40
60
80
100
1999 2000 2001 2002 2003 2004 2005 2006
QCCJ D QCCJ L QCCJ N QFCSH QFCSR RCCJ D
RCCJ L RCCJ N RCMJ N RMCJ N RMRSK TMRTH
Stem Rust Races on wild barley in MB
517 12
5
439
28
23
5
14
2
22
10079
4236
47
100
2 14
2
13
7
17
9 7
41
100
26
1425
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
1999 2000 2001 2002 2003 2004 2005 2006
QCCJ D QCCJ L QCCJ N QFCQR QFCSH QFCSK
QFCSR RCCJ D RCCJ N RCRSK RKQSR RMRSK
LLetter code system for oatetter code system for oatPg1 Pg2 Pg3 Pg4
PGT Pg6 Pg8 Pg9 Pg10code Pg12 Pg13 Pg15 Pg16
B L L L LC L L L HD L L H LF L L H HG L H L LH L H L HJ L H H LK L H H HL H L L LM H L L HN H L H LP H L H HQ H H L LR H H L HS H H H LT H H H H
Set 1Set 2Set 3
Kyto
Pg-a
Ω
α
Stem Rust Races on cultivated oat in MB
2 19
49 10 12 12
31
51
27 14 12
3
8 7
10
1
2
1 4
5
51
2
35
60
57
66
8156
60 68
1
6
3 7
16
6 10 1319
23
12
0
20
40
60
80
100
1999 2000 2001 2002 2003 2004 2005 2006
SGB (23) TGB (27) TGL (28) TGD (29) TJ D (30) TJ J (67)
TJ B (68) TJ G (76) TJ N TJ S TJ S+Ω
Stem Rust Races on Wild Oat in MB
3 3
19 18 17 16 12 14
34
91 1
4555
2924
20 18
23
22
6
6
811
6 9
4
7
26
19
42 45
55 51
31
46
21 2
4
1
2 2 4 4 5 51
1226
0
20
40
60
80
100
1999 2000 2001 2002 2003 2004 2005 2006
SGB (23) TGB (27) TGL (28) TGD (29) TJ D (30) TJ J (67)TJ B (68) TJ G (76) TJ N TJ S TJ S+Ω
