Ug99 Effective Sr Genes | RustTracker.org

Effective / Ineffective Stem Rust Resistance Genes

The following table summarizes the effective and ineffective stem rust resistance genes for races in the Ug99 lineage (based on Singh et al., 2006).

TTKSK (Ug99)
TTKSF
TTKST (Ug99 + Sr24)
TTTSK (Ug99 + Sr36)
TTKSP
PTKST
PTKSK

TTKSK (Ug99)

Race	Year of Identification	Origin of Sr Gene	Stem rust resistance (Sr) genes
Race	Year of Identification	Origin of Sr Gene	Ineffective	Effective
TTKSK ( Ug99)	1999	Triticum aestivum	5,6,7a, 7b, 8a, 9a, 9b, 9f, 10, 15, 16, 18, 19, 20, 23, 30, 41, 42, Wld-1	28^a, 29*, Tmp
Confirmed in:Uganda, Kenya, Ethiopia, Sudan, Yemen, Iran		Triticum turgidum	9d, 9e, 9g, 11, 12, 17	2, 13^a,, 14^a
		Triticum monococcum	21	22, 35
		Triticum timopheevi		36^a, 37
		Triticum speltoides		32, 39
		Triticum tauschii		33* 45
		Triticum comosum	34
		Triticum ventricosum	38
		Triticum araraticum		40
		Thinopyrum elongatum		24^a, 25^a, 26, 43
		Thinopyrum intermedium		44
		Secale cereale	31	27^a, 1A.1R

TTKSF [to top]

Race	Year of Identification	Origin of Sr Gene	Stem rust resistance (Sr) genes
Race	Year of Identification	Origin of Sr Gene	Ineffective	Effective
TTKSF	2000	Triticum aestivum	5,6,7a, 7b, 8a, 9a, 9b, 9f, 10, 15, 16, 18, 19, 20, 23, 30, 41, 42, Wld-1	28^a, 29*, Tmp
Confirmed in:South Africa	2000	Triticum turgidum	9d, 9e, 9g, 11, 12, 17	2, 13^a,, 14^a
Zimbabwe	2009	Triticum monococcum	21	22, 35
		Triticum timopheevi		36^a, 37
		Triticum speltoides		32, 39
		Triticum tauschii		33* 45
		Triticum comosum	34
		Triticum ventricosum	38
		Triticum araraticum		40
		Thinopyrum elongatum		24^a, 25^a, 26, 43
		Thinopyrum intermedium		44
		Secale cereale		31^a, 27^a, 1A.1R

TTKST (Ug99 + Sr24) [to top]

Race	Year of Identification	Origin of Sr Gene	Stem rust resistance (Sr) genes
Race	Year of Identification	Origin of Sr Gene	Ineffective	Effective
TTKST (Ug99 + Sr24)	2006	Triticum aestivum	5,6,7a, 7b, 8a, 9a, 9b, 9f, 10, 15, 16, 18, 19, 20, 23, 30, 41, 42, Wld-1	28^a, 29*, Tmp
Confirmed in:Kenya		Triticum turgidum	9d, 9e, 9g, 11, 12, 17	2, 13^a,, 14^a
Tanzania		Triticum monococcum	21	22, 35
Eritrea		Triticum timopheevi		36^a, 37
		Triticum speltoides		32, 39
		Triticum tauschii		33* 45
		Triticum comosum	34
		Triticum ventricosum	38
		Triticum araraticum		40
		Thinopyrum elongatum	24	25^a, 26, 43
		Thinopyrum intermedium		44
		Secale cereale	31	27^a, 1A.1R

TTTSK (Ug99 + Sr36) [to top]

Race	Year of Identification	Origin of Sr Gene	Stem rust resistance (Sr) genes
Race	Year of Identification	Origin of Sr Gene	Ineffective	Effective
TTTSK (Ug99 + Sr36)	2007	Triticum aestivum	5,6,7a, 7b, 8a, 9a, 9b, 9f, 10, 15, 16, 18, 19, 20, 23, 30, 41, 42, Wld-1	28^a, 29*, Tmp
Confirmed in:Kenya		Triticum turgidum	9d, 9e, 9g, 11, 12, 17	2, 13^a,, 14^a
Tanzania		Triticum monococcum	21	22, 35
		Triticum timopheevi	36	37
		Triticum speltoides		32, 39
		Triticum tauschii		33* 45
		Triticum comosum	34
		Triticum ventricosum	38
		Triticum araraticum		40
		Thinopyrum elongatum		24^a, 25^a, 26, 43
		Thinopyrum intermedium		44
		Secale cereale	31	27^a, 1A.1R

TTKSP [to top]

Race	Year of Identification	Origin of Sr Gene	Stem rust resistance (Sr) genes
Race	Year of Identification	Origin of Sr Gene	Ineffective	Effective
TTKSP (Ug99 progenitor + Sr24)	2007	Triticum aestivum	5,6,7a, 7b, 8a, 9a, 9b, 9f, 10, 15, 16, 18, 19, 20, 23, 30, 41, 42, Wld-1	28^a, 29*, Tmp
Confirmed in:South Africa		Triticum turgidum	9d, 9e, 9g, 11, 12, 17	2, 13^a,, 14^a
		Triticum monococcum	21	22, 35
		Triticum timopheevi		36, 37
		Triticum speltoides		32, 39
		Triticum tauschii		33* 45
		Triticum comosum	34
		Triticum ventricosum	38
		Triticum araraticum		40
		Thinopyrum elongatum	24	25^a, 26, 43
		Thinopyrum intermedium		44
		Secale cereale		31^a, 27^a, 1A.1R

PTKST [to top]

Race	Year of Identification	Origin of Sr Gene	Stem rust resistance (Sr) genes
Race	Year of Identification	Origin of Sr Gene	Ineffective	Effective
PTKST	2008	Triticum aestivum	5, 6, 7a, 7b, 8a, 8b, 9a, 9b, 9f, 10, 15, 16, 18, 19, 20, 23, 30, 41, Wld-1	28^a, 29*, 42, Tmp
Confirmed in:Ethiopia		Triticum turgidum	9d, 9e, 9g, 11, 12, 17	2, 13^a,, 14^a
Kenya	2009	Triticum monococcum		21, 22, 35
South Africa		Triticum timopheevi		36^a, 37
Mozambique		Triticum speltoides		32, 39
Zimbabwe		Triticum tauschii		33* 45
Eritrea		Triticum comosum	34
		Triticum ventricosum	38
		Triticum araraticum		40
		Thinopyrum elongatum	24	25^a, 26, 43
		Thinopyrum intermedium		44
		Secale cereale	31	27^a, 1A.1R

PTKSK [to top]

Race	Year of Identification	Origin of Sr Gene	Stem rust resistance (Sr) genes
Race	Year of Identification	Origin of Sr Gene	Ineffective	Effective
PTKSK	2007	Triticum aestivum	5, 6, 7a, 7b, 8a, 8b, 9a, 9b, 9f, 10, 15, 16, 18, 19, 20, 23, 30, 41, Wld-1	28^a, 29*, 42, Tmp
Confirmed in:Kenya		Triticum turgidum	9d, 9e, 9g, 11, 12, 17	2, 13^a,, 14^a
Ethiopia		Triticum monococcum		21, 22, 35
		Triticum timopheevi		36^a, 37
		Triticum speltoides		32, 39
		Triticum tauschii		33* 45
		Triticum comosum	34
		Triticum ventricosum	38
		Triticum araraticum		40
		Thinopyrum elongatum		24^a, 25^a, 26, 43
		Thinopyrum intermedium		44
		Secale cereale	31	27^a, 1A.1R

^a Virulence for the gene is known to occur in other races

* Level of resistance conferred in the field is usually not enough