Tarnick

Potato

Variety Description

Varieties used for comparison: 'Atlantic' and 'Snowden'

Summary: The plants of 'Tarnick' are shorter than those of 'Atlantic'. 'Tarnick' has high flowering profusion while it is low in 'Snowden'. The plant growth habit of 'Tarnick' is upright whereas it is semi-upright in 'Snowden'. 'Tarnick' has strong anthocyanin colouration at the base of the light sprout with an high proportion of blue while it is low 'Snowden'. The corolla of 'Tarnick' is white whereas it is blue-violet in 'Atlantic'. 'Tarnick' has very weak intensity of anthocyanin colouration on inner surface of corolla while it is medium on 'Atlantic'. 'Tarnick' has dense pubescence on the light sprout base while it is medium on the reference varieties. 'Tarnick' has a medium number of root tips on the light sprout while it is many on 'Snowden' and few on 'Atlantic'.

Description:

PLANT: upright growth habit, leaf type foliage structure

STEM: weak to medium anthocyanin colouration, medium to thick main stem, absent or very low swelling at nodes

LEAVES: medium to dark green, intermediate silhouette, absent or very weak anthocyanin colouration on upper side of rachis, weak anthocyanin colouration of petiole, absent to very low frequency of coalescence, medium depth of veins, absent or very weak waviness of margin, dull to medium glossiness of upper side, medium density of pubescence, medium presence of secondary leaflets
TERMINAL LEAFLET: medium ovate, acuminate tip, truncate base
LATERAL LEAFLET: medium to large size, medium ovate, acuminate tip, truncate base

INFLORESCENCE: high flowering profusion, large size
FLOWER BUD: high persistence, absent or very weak intensity of anthocyanin colouration
COROLLA: white, large size, medium prominence of star
PEDUNCLE: absent or very weak anthocyanin colouration

TUBER: round, white flesh with no secondary colour
TUBER EYES: intermediate depth, evenly distributed, slight to medium prominence of eyebrows
TUBER SKIN: light beige, white at base of eye, smooth texture

LIGHT SPROUT: medium size, spherical shape, medium number of root tips, medium length lateral shoots
LIGHT SPROUT BASE: strong anthocyanin colouration, high proportion of blue in anthocyanin colouration, dense pubescence
LIGHT SPROUT TIP: smaller in size than base, closed habit, medium anthocyanin colouration, medium pubescence

Origin & Breeding History: 'Tarnick' (experimental designation 11926-2 and F95031) originated by the hybridization of 'AC Novachip' and 'Connestoga', made in Fredericton, in 1992. Selection criteria were adaptation, tuber type and chip quality.

Tests & Trials: Trials for 'Tarnick' were conducted at Potato Research Centre, Fredericton, New-Brunswick, in 2009. There were two replicates of 30 plants with a plant spacing of 30 cm.

Comparison table for 'Tarnick' with reference varieties 'Atlantic' and 'Snowden'

Plant height (cm)

Click on image for larger view

Potato: 'Tarnick' (left) with reference varieties 'Atlantic' (center) and 'Snowden' (right)