The British Potato Variety Database

Clevna

Scottish Seed Stocks

English Seed Register

Parentage

Osprey x Pentland Ivory

Breeder

Dr J Dunnett, Caithness Varieties Ltd

Clevna is an early maincrop variety. This variety is suitable for both salads / punnets and table use. Tubers have good resistance to splitting and some resistance to bruising. Trials have found good resistance to blackleg and dry rot (Fusarium coeruleum). Tests for resistance to potato cyst nematodes demonstrated susceptibility to both Globodera rostochiensis Ro1 and Globodera pallida Pa 2/3, 1.

Tuber characteristics
Shape of tuber		Oval - long
Depth of eyes		Shallow
Colour of skin		Red parti-coloured
Colour of flesh		Cream

Botanical description
Maturity		Early Maincrop
Height of plants		Medium - tall
Frequency of berries		Medium
Colour of flower		White
Colour of base of lightsprout		Pink

Resistance to Damage, Pests and Diseases	Low	.	.	.	.	.	.	.	High
Black dot ( Colletotrichum coccodes )	.	.	.	.	5
Dry rot ( Fusarium coeruleum )	.	.	.	.	.	.	.	8
Dry rot ( Fusarium sulphureum )	.	.	3
Late blight on foliage ( Phytophthora infestans )	.	.	.	4
Late blight on tubers ( Phytophthora infestans )	.	.	.	.	5
Powdery scab ( Spongospora subterranea )	.	.	.	.	.	6
Silver scurf ( Helminthosporium solani )	.	.	.	.	5
Skin spot ( Polyscytalum pustulans )	.	.	.	.	.	.	.	8
Blackleg ( Pectobacterium atrosepticum )	.	.	.	.	.	.	7
Common scab ( Streptomyces scabiei )	.	.	.	.	.	6
Potato Cyst Nematode ( Globodera pallida Pa 2/3, 1 )	.	2
Potato Cyst Nematode ( Globodera rostochiensis Ro1 )	.	2
Potato Leafroll Virus	.	.	.	4
Potato Virus Yo	.	.	3
Bruising	.	.	.	4
Splitting	.	.	.	.	.	.	7

Results of National List and Potato Council Independent Variety Trials