Blaue St. Galler

Potato

Variety Description

Variety used for comparison: 'Adirondack Blue'

Summary: The lightsprout of 'Blaue St. Galler' has a broad cylindrical shape with sparse pubescence at the base whereas the lightsprout of 'Adirondack Blue' is ovoid in shape with dense pubescence at the base. The lightsprout tip of 'Blaue St. Galler' is small in relation to the base whereas it is medium sized in 'Adirondack Blue'. The foliage structure of 'Blaue St. Galler' is an intermediate type whereas it is a stem type in 'Adirondack Blue'. The plants of 'Blaue St. Galler' have a very high extent of anthocyanin colouration on the stem and the midrib of the upper side of the leaf whereas these are high in plants of 'Adirondack Blue'. The inflorescence of 'Blaue St. Galler' has a high to very high extent of anthocyanin colouration on the peduncle whereas the inflorescence of 'Adirondack Blue' has a medium extent of anthocyanin colouration on the peduncle. 'Blaue St. Galler' has a medium frequency of coalescence of the terminal and lateral leaflets whereas it is absent or very low in 'Adirondack Blue'. The plants of 'Blaue St. Galler' mature mid-season whereas those of 'Adirondack Blue' mature early. The tubers of 'Blaue St. Galler' have a long shape with eyes at a medium depth whereas the tubers of 'Adirondack Blue' are oval with deep eyes.

Description:

LIGHTSPROUT: large size, broad cylindrical shape, medium number of root tips, short lateral shoots
LIGHTSPROUT BASE: very strong intensity of anthocyanin colouration, high proportion of blue in anthocyanin colouration, sparse pubescence
LIGHTSPROUT TIP: small size in relation to base, intermediate habit, very strong intensity of anthocyanin colouration, medium pubescence

PLANT: foliage structure is an intermediate type where foliage is half open and stems are partly visible, semi-upright growth habit, medium maturity

STEM: very high extent of anthocyanin colouration along the entire length

LEAF: medium to large outline, open, dark green colour, very high extent and very strong intensity of anthocyanin colouration on the midrib of the upper side
SECOND PAIR OF LATERAL LEAFLETS: medium size, narrower than long width in relation to length
LEAFLETS: medium presence of secondary leaflets, medium frequency of coalescence of terminal and lateral leaflets, weak waviness of margin, deep veins, medium glossiness of upper side, pubescence on blade at apical rosette

INFLORESCENCE: medium frequency per plant, medium size, high to very high extent of anthocyanin colouration on peduncle
FLOWER BUD: high extent of anthocyanin colouration
COROLLA: medium to large size, absent or very low extent and absent or very weak intensity of anthocyanin colouration on the inner side, with absent or low proportion of blue

TUBER: long shape, blue flesh
TUBER EYES: medium depth
TUBER SKIN: blue, blue at base of eye

Origin & Breeding History: The origin of 'Blaue St. Galler' is the result of the cross made in 1995 between 'Blaue Schweden' and 'Prättigauer' in Flawil, Switzerland. Selection criteria included maturity, yield, disease resistance, processing traits, morphological traits and storage characters.

Tests & Trials: Tests and trials for 'Blaue St. Galler' were conducted during the 2012 growing season in Drummond, New Brunswick. Each plot per variety consisted of 60 plants grown in a single row with a row length of 18.5 metres and a row spacing of 0.9 metres. Plants were spaced 0.30 metres apart.

Comparison table for 'Blaue St. Galler' with reference variety 'Adirondack Blue'

Plant height (cm)

Click on image for larger view

Potato: 'Blaue St. Galler' (left) with reference variety 'Adirondack Blue' (right)