TABLE 1.

Isolates of P. infestans used in this study

Country of origin	Isolate name	Hosta	Mating type	MtDNA	Field location	Collection yr	Supplierd
Canada	Can2	T	A2	Ia	Vancouver	1994	A
	Can4	P	A1	IIb	Vancouver	1994	A
Colombia	GF29	T	A1	Ib	Rionegro	1990	B
	GF256	T	A1	IIa	NK	1993	B
	GF1361	NKb	NK	IIa	NK	1993	B
	GF1368	NK	NK	IIa	NK	1993	B
Russia	19	P	A2	IIa	Voskresensk, Moscow	1991	C
	31	P	A1	IIa	Voskresensk, Moscow	1991	C
	45	P	A2	IIa	Voskresensk, Moscow	1991	C
	52	P	A2	IIa	Voskresensk, Moscow	1991	C
	112	P	A2	IIa	Voskresensk, Moscow	1991	C
	113	P	A1	IIa	Voskresensk, Moscow	1991	C
	154	P	A2	IIa	Voskresensk, Moscow	1991	C
	14.91	P	SFc	IIa	Belorussia	1991	C
	31.91	P	SF	Ib	Belorussia	1991	C
	1.T1	T	A1	Ib	Moscow region	1993	C
	2.T0.K	P	A2	IIa	Moscow region	1993	C
	3.T1	T	A2	IIa	Moscow region	1993	C
	4.T1	T	A1	Ib	Moscow region	1993	C
	6.T0.K	P	A1	IIa	Moscow region	1993	C
	7.T0.K	P	A1	IIa	Moscow region	1993	C
	8.T0.K	T	A1	IIa	Moscow region	1993	C
	9.T1	T	A1	Ia	Moscow region	1993	C
	10.T1	T	A1	IIa	Moscow region	1993	C
	DP.1	T	A2	Ia	Odintzovo, Moscow region	1993	C
	I0.24	P	A1	IIa	Odintzovo, Moscow region	1993	C
	K27	P	A2	IIa	Noginsk, Moscow region	1991	C
	K3.4	P	A1	IIa	Odintzovo, Moscow region	1993	C
	K3.9	P	A1	IIa	Odintzovo, Moscow region	1993	C
	K3.22	P	A1	IIa	Odintzovo, Moscow region	1993	C
	K3.37	P	A1	IIa	Odintzovo, Moscow region	1993	C
	K3.43	P	A1	IIa	Odintzovo, Moscow region	1993	C
	K3.53	P	A1	IIa	Odintzovo, Moscow region	1993	C
	K3.54	P	A2	IIa	Odintzovo, Moscow region	1993	C
	K3.56	P	A1	IIa	Odintzovo, Moscow region	1993	C
	K4.4	P	A1	IIa	Odintzovo, Moscow region	1994	C
	K4.5	P	A1	IIa	Odintzovo, Moscow region	1994	C
	K4.25	P	A1	Ia	Odintzovo, Moscow region	1994	C
	K4.26	P	A1	Ia	Odintzovo, Moscow region	1994	C
	K4.29	P	A1	Ia	Odintzovo, Moscow region	1994	C
	K4.31	P	A1	IIa	Odintzovo, Moscow region	1994	C
	K4.39	P	A1	IIa	Odintzovo, Moscow region	1993	C
	K4.42	P	A1	IIa	Odintzovo, Moscow region	1993	C
	KT2	P	A2	IIa	Taldom, Moscow region	1991	C
	KT5	P	A2	IIa	Taldom, Moscow region	1991	C
	KT16	P	A2	IIa	Taldom, Moscow region	1991	C
	KT17	P	A2	IIa	Taldom, Moscow region	1991	C
	KT19	P	A2	IIa	Taldom, Moscow region	1991	C
	KT21	P	A1	IIa	Taldom, Moscow region	1991	C
	KT23	P	A1	IIa	Taldom, Moscow region	1991	C
	KT33	P	A1	IIa	Taldom, Moscow region	1991	C
	PT.8	T	A1	Ia	Odintzovo, Moscow region	1993	C
	RYD138	P	A1	Ib	Belorussia	1990	C
	RYD151	T	A2	IIa	Moscow region	1987	C
	RYD55	P	A1	Ib	Moscow region	1987	C
	RYD3101	T	A1	IIa	Moscow region	1992	C
	RYD3210	T	A1	Ib	Moscow region	1992	C
	TA.33	T	A1	Ia	Adler, southern Russia	1992	C
	TA.61	T	A1	Ia	Adler, southern Russia	1992	C
	T0.K2	P	A1	IIa	Siberia, Tomsk region	1994	C
	T0.K3	P	A1	IIa	Siberia, Tomsk region	1994	C
	T0.K4	P	A1	IIa	Siberia, Tomsk region	1994	C
	T.11	T	A2	Ia	Odintzovo, Moscow region	1993	C
Taiwan	Tai1	T	A1	Ib	Hsinche, Nantou Province	1991	D
	TYH1	T	A1	Ib	Tainan	1991	D
	TYH2	T	A1	Ib	Tainan	1992	D
	TJCJul7	T	A1	Ib	Puli, Nantou	1994	D
Tanzania	TZNW1	T	A1	Ib	Tengeru, Arusha	1994	E
United Kingdom	78/06	P	A1	Ib	Llandegai, Gwynedd, Wales	1978	A
	78/18	P	A1	Ib	Wrington, Bristol, England	1978	A
	81/2	P	A1	Ib	Llandegai, Gwynedd, Wales	1981	A
	81/9	P	A1	Ia	Llandegai, Gwynedd, Wales	1981	A
	83/5	P	NK	Ia	Bangor, Gwynedd, Wales	1983	A
	1756sz	P	NK	Ia	Long Ashton, Avon, England	1985	A
	85/123	P	A1	Ia	Haskayne, Lancashire	1985	A
	87/141/4	P	A1	IIa	Llangefni, Ynys Mon, Wales	1987	A
	88/130/4	P	A1	Ia	Penmon, Ynys Mon, Wales	1988	A
	91/03/1	P	NK	Ia	ADAS, Bristol, England	1991	A
	91/12/2	T	NK	Ia	Epsom, Surrey, England	1991	A
	92/8	T	A1	Ia	Llandegai, Gwynedd, Wales	1992	A
	93/20/1	P	A1	IIa	Boston, Lincolnshire, England	1993	A
	93/025/5	P	A1	Ia	Starcross, Devon, England	1993	A
	93/028/8	P	A1	Ia	Biwmaris, Ynys Mon, Wales	1993	A
	93/102	P	A2	Ia	Liskeard, Cornwall, England	1993	A
United States	Ca29	T	A1	IIb	California	1984	F
	Ca65	T	A1	IIb	California	1984	F
	F276	T	A2	Ia	Yolo County, California	1993	G
	F277	T	A2	Ia	Yolo County, California	1993	G
	F284	T	A2	IIb	Woodland, California	1993	G
	F286	T	A2	IIb	Saticoy, California	1993	G

^aThe original host plants are indicated as P (potato) and T (tomato). 

^bNK, not known. 

^cSF, self-fertile. 

^dSuppliers are indicated as follows: A, UW Bangor culture collection; B, G. Forbes (CIP, Quito, Ecuador); C, Y. Dyakov (Moscow State University, Russia); D, Y.-H. Huang (AVRDC, Tainan, Taiwan); E, R. Nono-Wondim (AVRDC, Arusha, Tanzania); F, M. Coffey (University of California, Riverside); G, B. Gabor (Petoseed Ltd., Woodland, Calif.).