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Dakota Diamond


Denomination: 'Dakota Diamond'
Botanical Name: Solanum tuberosum
Applicant/Holder: NDSU Research Foundation
1735 NDSU Research Park Drive
Dept. No. 4400, P.O. Box 6050
Fargo, North Dakota
United States of America
Breeder: Dale Zetocha, NDSU Research Foundation, Fargo, United States of America
Agent in Canada: Rockyview Nuclear Tuber Ltd.
263145 Township Rd. 262
Rockyview Country, Alberta
Tel: 403-935-4950
Application Date: 2006-06-27(priority claimed)
Application Number: 06-5519
Protective direction granted: 2006-06-27
Grant of Rights Date: 2008-06-26
Certificate Number: 3243
Date rights surrendered: 2017-06-26

Variety Description

Varieties used for comparison: 'Dakota Pearl' and 'Snowden'

Summary: 'Dakota Diamond' has a taller plant height than 'Dakota Pearl'. 'Dakota Diamond' has a longer, wider leaf than the reference varieties. 'Dakota Diamond' has shallower tuber eyes than the reference varieties. 'Dakota Diamond' has white tuber flesh while the reference varieties have cream tuber flesh. 'Dakota Diamond' has stronger anthocyanin colouration on the light sprout base than 'Snowden' and sparser pubescence on the base than 'Dakota Pearl'.


PLANT: semi upright growth habit, intermediate type foliage structure
STEM: no anthocyanin colouration, thin to medium thickness, nodes with absent or very low swelling

LEAVES: medium green, intermediate silhouette, absent or very weak anthocyanin colouration on upper side of rachis and petiole, shallow to medium depth of veins, absent or very weak waviness of margin, medium glossiness on upper side, medium to dense pubescence on leaves at apical rosette, medium presence of secondary leaflets
TERMINAL LEAFLET: narrow to medium ovate shape, acute tip, obtuse base, absent or very low frequency of coalescence with lateral leaflets
LATERAL LEAFLETS: large, narrow ovate shape, acute tip, obtuse to cordate base

INFLORESCENCE: medium flowering profusion, medium size, flower buds persistent, absent or very weak anthocyanin colouration in flower bud.
COROLLA: white, small to medium size, moderately prominent star, absent or very weak anthocyanin colouration on peduncle

TUBER: round
TUBER SKIN: light beige, yellow at base of eye, smooth texture
TUBER EYES: shallow in depth, evenly distributed, eyebrows slightly prominent
TUBER FLESH: white, no secondary colour

LIGHT SPROUT: medium size, spherical, low number of root tips, short lateral shoots
BASE: medium anthocyanin colouration, absent or low proportion of blue in anthocyanin, sparse pubescence
TIP: equal to base in size, closed habit, absent or very weak anthocyanin colouration, sparse pubescence.

Origin & Breeding History: 'Dakota Diamond' originated from a cross between ND4103-2 and 'Dakota Pearl', made at North Dakota State University in 1994. 'Dakota Diamond' was selected in the field as a seedling in 1995 at Langton, North Dakota, USA. It is derived from the hybridization of the two parents and a phenotypic recurrent selection technique was utilized in its development. 'Dakota Diamond' was tested under the pedigree number ND5822C-7.

Tests & Trials: Trials for 'Dakota Diamond' were conducted in Drummond, New Brunswick in 2006. All entries were planted in single-row plots. Plots consisted of rows 22 metres long with 30 cm in row spacing and between row spacing of 91 cm. Measured characteristics were based on 10 measurements. Colour determinations were made using the 1986 RHS colour chart.

Comparison tables for 'Dakota Diamond' with reference varieties 'Dakota Pearl' and 'Snowden'

Plant height (cm)

  'Dakota Diamond' 'Dakota Pearl' 'Snowden'
mean 64.6 51.2 62.2
std. deviation 8.9 3.5 5.1

Leaf length (cm)

  'Dakota Diamond' 'Dakota Pearl' 'Snowden'
mean 34.0 30.6 28.7
std. deviation 3.6 2.7 1.8

Leaf width (cm)

  'Dakota Diamond' 'Dakota Pearl' 'Snowden'
mean 21.2 17.7 18.3
std. deviation 2.4 1.9 2.1

Click on image for larger view
Dakota Diamond
Potato: 'Dakota Diamond' (centre) with reference varieties 'Snowden' (left) and 'Dakota Pearl' (right)

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