Annual stem rust race surveys

Yue JinLucy Wanschuwa

Dave LongJerry OchockiJim Kolmer

Mark Hughes

Collaborators

Wheat Stem Rust--2006 survey results

Race # of isolates State

QFCS 25 LA, GA, TX, MN, SD, ND, ID

MCCD 1 LA

TTTT 1 LA

Uncertain 2 TX, ID

Oat Stem Rust--2006 survey results

Race NA race # isol State

DBD 5 2 CA

TGB 27 2 CA, LA

TGD 29 6 LA, TX, WI, MN, SD

TJD 30 2 TX, MN

TJJ 67 5 TX, IA, MN

TGN (29+Pga) 6 LA, TX

TJN (30+Pga) 5 TX, IA

TJS (67+Pga) 9 FL, LA, AL, TX

2003

Barberry in MN

Barberry & stem rust infections in SE MN

Stem rust samples from barberry from MN, WI, & NY were not Pgt or Pga

Wanyera, Kinyua, Jin, Singh 2006 Plant Dis 90:113

Pretorius, Singh, Wagoire, Payne 2000 Plant Dis 84:203

Singh, Hodson, Jin, Huerta-Espino, Kinyua, Wanyera, Njau, Ward 2006 CAB Review

Race TTKS distribution

Ug99 was discovered in Ugandain 1999, 1st known race virulent on Sr31

Stem rust race TTKS in Kenya in 2004 was identical to Ug99

In 2006, TTKS was detected in Yemenand in Sudan

Ug99 on SR differentials Set Line Sr gene 05KEN156

98UGA1

1ISr5Ra 5 44 T.m.deri. 21

3+ 3+Verstein 9e 44

ISr7bRa 7b 33+

2ISr11Ra 11 44

ISr6Ra 6 44

ISr8Ra 8a 44

CnsSr9g 9g 44

3W2691SrTt-1 36 00

W2691Sr9b 9b 44

BtSr30Wst 30 43+Comb. VII 17+13 2++2++

4ISr9aRa 9a 44

ISr9dRa 9d 44

W2691Sr10 10 44

CnsSrTmp Tmp 2+2+

Race: TTKS TTKS

B R R R R

C R R R S

D R R S R

F R R S S

G R S R R

H R S R S

J R S S R

K R S S S

L S R R R

M S R R S

N S R S R

P S R S S

Q S S R R

R S S R S

S S S S R

T S S S S