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Adirondack Blue


Denomination: 'Adirondack Blue'
Botanical Name: Solanum tuberosum
Applicant/Holder: Cornell University
Cornell Center for Technology, Enterprise & Commercialization
395 Pine Tree Road, Suite 310
Ithaca, New York
United States of America
Breeder: Robert L. Plaisted, Cornell University, Ithaca, United States of America
Ken Paddock, Cornell University, Ithaca, United States of America
Agent in Canada: Global Agri Services Inc.
376 New Maryland Highway
New Maryland, New Brunswick
E3C 1E5
Tel: 506-462-9493
Application Date: 2007-03-20(priority claimed)
Application Number: 07-5791
Protective direction granted: 2007-03-20
Grant of Rights Date: 2009-03-18
Certificate Number: 3464
Grant of Rights Termination Date: 2027-03-18

Variety Description

Variety used for comparison: 'River John Blue'

Summary: 'Adirondack Blue' has an upright growth habit while 'River John Blue' is semi-upright. 'Adirondack Blue' has shorter plants with longer leaves than 'River John Blue'. The corolla is white with very weak anthocyanin colouration of the inner side for 'Adirondack Blue' while the reference variety has a blue-violet corolla with strong anthocyanin colouration. 'Adirondack Blue' has an oval tuber while 'River John Blue' has a cylindrical tuber. The light sprouts of 'Adirondack Blue' have short lateral shoots while they are medium in length for 'River John Blue'.


PLANT: upright growth habit, stem type foliage structure
STEM: strong anthocyanin colouration evenly distributed, medium thickness, nodes with absent or very low swelling

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

INFLORESCENCE: medium flowering profusion, medium size, flower buds are persistent, strong anthocyanin colouration of flower bud
COROLLA: white, large, prominant star, very weak anthocyanin colouration of inner side and medium anthocyanin colouration on peduncle

TUBER: oval
TUBER SKIN: blue, blue at base of eye, smooth texture
TUBER EYES: intermediate depth, even distribution, medium prominence of eyebrows
TUBER FLESH: purple, no secondary colour

LIGHT SPROUT: medium size, broad cylindrical shape, many root tips, short lateral shoots
BASE: very strong anthocyanin colouration, high proportion of blue in anthocyanin colouration, medium pubescence
TIP: smaller than base in size, closed habit, very strong anthocyanin colouration, medium pubescence

Origin & Breeding History: 'Adirondack Blue' originated from a cross between 'N40-1' and 'NY96', in early 1993. The traits which were evaluated most rigorously were uniformity of flesh colour, freedom from internal and external physical defects, maturity and yield.

Tests & Trials: Trials for 'Adirondack Blue' were conducted in Drummond, New Brunswick in 2007. All entries were planted in single-row plots. Plots consisted of rows 22 meters long with 30 cm in row spacing between plants and spacing between rows of 91 cm. Measured characteristics were based on 10 measurements. Colour determinations were made using the 1986 RHS colour chart.

Comparison table for 'Adirondack Blue' with reference variety 'River John Blue'

Plant height (cm)

  'Adirondack Blue' 'River John Blue'
mean 45.6 64.0
std. deviation 2.6 2.4

Click on image for larger view
Adirondack Blue
Potato: 'Adirondack Blue' (right) with the reference variety 'River John Blue' (left)

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