The British Potato Variety Database

Excalibur

Scottish Seed Stocks

English Seed Register

Parentage

Saxon x Valor

Breeder	Cygnet PB Ltd
Breeder's Agent	Cygnet PB Ltd
Plant Breeders Rights (expire)	2038

Tubers have good resistance to bruising and splitting. Trials have found good resistance to late blight on tubers, powdery scab and blackleg. Tests for resistance to potato cyst eelworm demonstrated resistance to Globodera rostochiensis Ro1 and susceptibility to Globodera pallida Pa 2/3, 1. Susceptible to Black scurf and skin spot.

Tuber characteristics
Shape of tuber		Oval
Depth of eyes		Shallow
Colour of skin		White
Colour of flesh		Cream

Botanical description
Maturity		Maincrop
Height of plants		Short - medium
Colour of flower		White
Colour of base of lightsprout		Pink

Resistance to Damage, Pests and Diseases	Low	.	.	.	.	.	.	.	High
Black dot ( Colletotrichum coccodes )	.	.	.	.	.	6
Dry rot ( Fusarium coeruleum )	.	.	.	.	.	6
Dry rot ( Fusarium sulphureum )	.	.	.	.	5
Late blight on foliage ( Phytophthora infestans )	.	.	.	.	5
Late blight on tubers ( Phytophthora infestans )	.	.	.	.	.	.	7
Powdery scab ( Spongospora subterranea )	.	.	.	.	.	.	7
Silver scurf ( Helminthosporium solani )	.	.	.	.	.	6
Skin spot ( Polyscytalum pustulans )	.	.	3
Blackleg ( Pectobacterium atrosepticum )	.	.	.	.	.	.	.	.	9
Common scab ( Streptomyces scabiei )	.	.	.	.	5
Potato Cyst Nematode ( Globodera pallida Pa 2/3, 1 )	.	.	3
Potato Cyst Nematode ( Globodera rostochiensis Ro1 )	.	.	.	.	.	.	.	.	9
Potato Leafroll Virus	.	.	.	.	5
Potato Virus Yo	.	.	.	4
Bruising	.	.	.	.	.	6
Splitting	.	.	.	.	.	6

Results of National List and Potato Council Independent Variety Trials