The European Cultivated Potato Database

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Characters	Ermak	Early Rose	Katahdin
Foliage cover	-	6[21] 7[9] 8[12]	6[9] 7[14,15]
Flower colour	-	1[9,12,13,21]	-
Flower frequency	-	6[9] 7[21] 8[12]	4[13] 5[9] 8[14]
Berries	-	2[9,21]	6[13] 7[9]
Pollen fertility	-	4[23]	-
Stolon length	-	6[21]	-
Light sprout colour	-	1[13,21]	1[13]
Tuber skin colour	-	2[9,12,13,18,21]	1[9,13,14,15]
Tuber eye colour	-	-	1[13]
Primary tuber flesh colour	-	1[9,13,18,21] 2[12]	1[9,13,14,15]
Secondary tuber flesh colour	-	7[21]	-
Tuber shape	-	2[12] 3[9,18] 5[13,21]	1[13,14] 2[15] 3[9]
Tuber eye depth	-	4[12] 5[9,21]	6[13] 7[9,14,15]
Tuber skin texture	-	6[21] 7[9] 8[12]	6[13] 7[14] 8[9]
Yield potential	7[23]	5[9] 7[18]	5[15] 7[9,23]
Tubers per plant	-	-	4[13]
Tuber size	-	4[12] 5[9]	6[14] 8[9] 9[13]
Tuber shape uniformity	-	4[9] 7[12] 8[21]	7[9,15]
Hollow heart tendency	-	7[9]	-
Internal rust spot	-	7[9] 9[12]	-
Resistance to external damage	-	3[12]	-
Resistance to internal bruising	-	-	1[15]
Dormancy period	-	-	6[15]
Storage ability	-	-	7[15] 8[14]
Cooking type / 411 Cooked texture	-	2[9] 3[12]	2[14] 5[15]
After cooking blackening	-	3[18] 6[9] 9[12]	-
Taste	-	5[9]	5[9]
Crisp suitability	-	6[18]	-
French fry suitability	-	4[18]	5[15]
Frying colour	-	2[12]	5[15]
Dry matter content	7[23]	5[18,23]	4[13] 6[14] 7[15]
Starch content	5[23]	4[9,18]	3[9] 6[14]
Presence of late blight R gene	-	3[13]	4[13]
Resistance to stem canker (Rhizoctonia solani)	-	-	3[9]
Resistance to common scab (Streptomyces scabies)	-	4[9] 5[18] 8[12]	2[14] 3[9] 4[15]
Wart (Synchytrium endobioticum)	-	1[9,21]	1[9,15]
Susceptibility to wart races	-	1[21]	-
Resistance to bacterial soft rot (Erwinia spp.)	-	-	5[9]
Resistance to potato virus A	-	3[9]	8[14] 9[9,13,15]
Resistance to potato virus X	-	3[9,18]	-
Resistance to potato virus Y (strain not specified)	-	3[9]	4[14] 5[9] 7[13,15]
Resistance to potato virus YN	-	3[18]	-
Resistance to potato leaf roll virus	-	4[9] 9[18]	4[14] 6[9,13,15]
Resistance to Globodera rostochiensis race 1	-	3[9]	2[15] 3[9]
Resistance to Globodera rostochiensis race 5	-	-	8[15]
Drought resistance	-	7[9]	7[14,15] 9[9,13]
Resistance to late blight on tubers	5[23]	2[13] 3[9,12,18] 5[23]	5[9,23] 6[13,15]
Resistance to late blight on foliage	5[23]	3[9,13,18,23] 8[12]	2[14] 3[9,23] 4[13] 6[15]

Source:
[20]	Zimnoch-Guzowska, Ewa	2000	Plant Breeding and Acclimatization Institute, POLAND
[23]	Kiru, Stepan	1999	N.I. Vavilov All-Russian Scientific Research, RUSSIAN FEDERATION
[8]	Mix-Wagner, Gunda	1997	Federal Research Centre of Agriculture, GERMANY
[9]	Scheler, Konrad	2000	Leibniz Institute of Plant Genetics and Crop Plant Research (IPK), GERMANY
[11]	Ellisseche, Daniel	2000	INRA, FRANCE
[12]	Manchett, Richard	2000	Henry Doubleday Research Association (HDRA), UNITED KINGDOM
[18]	Aziparte, Enrique Ritter	2000	NEIKER-Instituto Vasco de Investigaci�n y Des, SPAIN
[21]	Vetelinen, Merja	2000	Nordic Genetic Resource Center, SWEDEN
[22]	Vern, E.V.	2000	VERN e.V., GERMANY
[13]	Campbell, Heather	2000	SASA, UNITED KINGDOM
[6]	Jaroslava, Domkarova	1997	Potato Research Institute, CZECH REPUBLIC
[7]	Choiseul, James	1996	Department of Agriculture Food and Forestry, IRELAND
[14]	Polgar, Zsolt	1999	Pannon University , HUNGARY
[15]	HZPC, B.V.	2000	HZPC B.V., NETHERLANDS
[40]	Dillon, Joan	2006	Teagasc Crops Research Centre, IRELAND