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Denomination: 'STP00-10'
Botanical Name: Solanum tuberosum
Applicant/Holder: McCain Produce Inc.
8734 Main Street
Unit 1
Florenceville-Bristol, New Brunswick
E7L 3G6
Breeder: Terrance Smith, Bristol, New Brunswick
Application Date: 2009-08-27(priority claimed)
Application Number: 09-6719
Protective direction granted: 2009-08-27
Date abandoned: 2013-02-04

Variety Description

Variety used for comparison: 'Shepody'

Summary: The plants of 'STP00-10' are taller than the plant of 'Shepody'. The stem of 'STP00-10' has an absent or very low extent of anthocyanin colouration while the stem of 'Shepody' has a low to medium extent of anthocyanin along the entire stem. The flower bud of 'STP00-10' has a high extent of anthocyanin while the flower bud of 'Shepody' has a low extent of anthocyanin. The light sprout of 'STP00-10' is conical in shape while the light sprout of 'Shepody' is broad cylindrical in shape. The light sprout base of 'STP00-10' has medium anthocyanin colouration with a medium proportion of blue while the light sprout base of 'Shepody' has strong anthocyanin with an absent or low proportion of blue.


PLANT: semi-upright to spreading growth habit, foliage structure intermediate between stem and leaf type, mid-season maturity

STEM: absent or very low extent of anthocyanin colouration

LEAVES: large, intermediate to open silhouette, medium presence of secondary leaflets, light to medium green, absent or very low extent of anthocyanin colouration on midrib of upper side, absent or very weak intensity of anthocyanin colouration on midrib of upper side, absent or very low frequency of coalescence of terminal and lateral leaflets
SECOND PAIR OF LATERAL LEAFLETS: large, narrower than long width in relation to length
LEAFLETS: absent or very weak waviness of margin, shallow to medium depth veins, medium glossiness on upper side, pubescence present on blade at apical rosette

INFLORESCENCE: medium frequency of inflorescences per plant, small to medium in size, absent or very low extent of anthocyanin colouration on peduncle
FLOWER BUD: high extent of anthocyanin colouration
COROLLA: medium size, medium anthocyanin colouration on inner side with absent or low proportion of blue, medium to high extent of anthocyanin on inner side

TUBER: long oval, white flesh
TUBER EYES: shallow to medium depth
TUBER SKIN: light beige, yellow at base of eye, strong anthocyanin colouration of skin in reaction to light

LIGHT SPROUT: large, conical shape, medium number of root tips, long lateral shoots
LIGHT SPROUT BASE: medium anthocyanin colouration, medium proportion of blue in anthocyanin colouration, medium pubescence
LIGHT SPROUT TIP: small size in relation to base, intermediate habit, absent or very weak anthocyanin colouration, medium density of pubescence.

Origin & Breeding History: The variety 'STP00-10' originated from the open pollination of the variety 'Millennium Russet' with an unknown male parent. The seed was collected in a trial field of 'Millennium Russet' in Florenceville, New Brunswick in 2000. The variety was selected in the field as a seedling in 2001 at Terrance Smith Potato Breeding Farm in Bristol, New Brunswick. A phenotypic recurrent selection technique was utilized in its development. An intensive evaluation process of eight years of trials throughout Canada was used to identify the variety. Characteristics used in the selection process were maturity, yield, disease resistance, processing traits, morphological traits and storage characteristics.

Tests & Trials: Trials for 'STP00-10' were conducted during the summer of 2010 in Drummond, New Brunswick. Plots consisted of one row with a row length of 18.5 meters and a row spacing of 90 cm. Plants were spaced 30 cm apart within the row. There were 60 plants per variety in the trial. Measured characteristics were based on ten measurements.

Comparison table for 'STP00-10' with reference variety 'Shepody'

Plant height (cm)

  'STP00-10' 'Shepody'
mean 67 47
std. deviation 2.6 2.6

Click on image for larger view
Potato: 'STP00-10' (right) with reference variety 'Shepody' (left)

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