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Denomination: 'AR98-9'
Botanical Name: Solanum tuberosum
Applicant/Holder: Agriculture & Agri-Food Canada, Fredericton
Fredericton Research and Development Centre
850 Lincoln Road, P.O. Box 20280
Fredericton, New Brunswick
E3B 4Z7
Breeder: T. Richard Tarn, Agriculture & Agri-Food Canada, Fredericton, New Brunswick
Agent in Canada: McCain Produce Inc.
8734 Main Street
Unit 1
Florenceville-Bristol, New Brunswick
E7L 3G6
Tel: 506-392-2893
Application Date: 2008-06-18(priority claimed)
Application Number: 08-6388
Protective direction granted: 2008-06-18
Grant of Rights Date: 2010-11-25
Certificate Number: 3969
Exemption from compulsory licensing: Yes
Expiry date for exemption from compulsory licensing: 2012-11-25
Date rights surrendered: 2013-03-26

Variety Description

Variety used for comparison: 'Shepody'

Summary: The plants of 'AR98-9' are shorter than those of 'Shepody'. The leaves of 'AR98-9' are longer and wider than those of 'Shepody'. The corolla of 'AR98-9' is white whereas it is red-violet on 'Shepody'. The light sprout of 'AR98-9' is narrow cylindrical in shape with no pubescence whereas the light sprout of 'Shepody' is conical with very dense pubescence.


PLANT: semi-upright growth habit, intermediate to leaf type foliage structure

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

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

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

TUBER: oblong, cream flesh with no secondary colour
TUBER EYES: shallow, evenly distributed, slight prominence of eyebrows
TUBER SKIN: light beige, yellow at base of eye, weak anthocyanin colouration of skin in reaction to light, netted texture

LIGHT SPROUT: large, narrow cylindrical shape, medium number of root tips, short lateral shoots
LIGHT SPROUT BASE: weak intensity of anthocyanin colouration, absent or low proportion of blue in anthocyanin colouration, absent or very sparse pubescence
LIGHT SPROUT TIP: smaller in size than base, closed habit, absent or very weak anthocyanin colouration, medium density of pubescence

Origin & Breeding History: 'AR98-9' originated from a cross of 'Coastal Russet' and 'B6503-2', made at the Potato Research Centre, Agriculture and Agri-Food Canada in Fredericton, New Brunswick in 1990. Initial selections were carried out in 1992 where phenotypic recurrent selection techniques were used in its development. The main selection criteria included yield, maturity, resistance, processing traits, morphological traits and storage characters.

Tests & Trials: Trials for 'AR98-9' were conducted in Central Blissville, New Brunswick in 2008. All entries were planted in single-row plots. Plots consisted of rows 22 metres long spaced 91 cm apart with 30 cm in row spacing between plants. Measured characteristics were based on 10 measurements. Colour determinations were made using the 1986 RHS colour chart.

Comparison tables for 'AR98-9' with reference variety 'Shepody'

Plant height (cm)

  'AR98-9' 'Shepody'
mean 57.1 67.1
std. deviation 2.6 4.3

Leaf length (cm)

  'AR98-9' 'Shepody'
mean 30.9 28.4
std. deviation 2.5 1.2

leaf width (cm)

  'AR98-9' 'Shepody'
mean 17.6 14.3
std. deviation 1.3 1.2

Colour of corolla (RHS)

  'AR98-9' 'Shepody'
inner surface 157B 85A

Click on image for larger view
Potato: 'AR98-9' (right) with reference variety, 'Shepody' (left)

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