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Premier Russet


Denomination: 'Premier Russet'
Previously Proposed Denomination: 'A93157-6LS'
Botanical Name: Solanum tuberosum
Applicant/Holder: University of Idaho
Office of Technology Transfer
875 Perimeter Drive, MS3003
Moscow, Idaho
United States of America
Breeder: Jeffrey C. Stark, University of Idaho, Idaho Falls, 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: 2007-03-30(priority claimed)
Application Number: 07-5822
Protective direction granted: 2007-03-30
Grant of Rights Date: 2009-10-31
Certificate Number: 3675
Grant of Rights Termination Date: 2027-10-31

Variety Description

Variety used for comparison: 'Russet Burbank'

Summary: 'A93157-6LS' has shorter plants with smaller leaves than 'Russet Burbank'. 'A93157-6LS' has a strong waviness of margin on the terminal and lateral leaflets while it is absent or very weak for 'Russet Burbank'. The light sprouts of 'A93157-6LS' are medium in size with a narrow cylindrical shape while those of 'Russet Burbank' are small and ovoid.


PLANT: semi-upright growth habit, intermediate type foliage structure
STEM: weak anthocyanin colouration located on the leaf axil, medium thickness, nodes with low swelling

LEAVES: medium green, intermediate silhouette, absent or very weak anthocyanin colouration on upper side of rachis and petiole, medium depth of veins, strong waviness of margin, medium glossiness on upper side, no pubescence on leaves of apical rosette, weak presence of secondary leaflets
TERMINAL LEAFLET: medium ovate shape, acute to acuminate tip, obtuse to cordate base, absent or very low frequency of coalescence with lateral leaflets
LATERAL LEAFLET: medium in size, narrowly ovate shape, acute tip, cordate base

INFLORESCENCE: medium flowering profusion, medium size, flower buds are persistent, medium anthocyanin colouration of flower bud
COROLLA: white, large, prominant star, weak to medium anthocyanin colouration on peduncle

TUBER: oblong
TUBER SKIN: light beige, yellow at base of eye, weak anthocyanin colouration in reaction to light, netted texture
TUBER EYES: intermediate depth, even distribution, slight prominence of eyebrows
TUBER FLESH: cream, no secondary colour

LIGHT SPROUT: medium size, narrow cylindrical shape, many root tips, medium length lateral shoots
BASE: strong anthocyanin colouration, medium proportion of blue in anthocyanin colouration, sparse pubescence
TIP: smaller than base in size, closed habit, weak anthocyanin colouration, medium pubescence

Origin & Breeding History: 'A93157-6LS' was derived from a sexual hybridization made at the University of Idaho's Aberdeen Research and Extension Center in 1993. 'A93157-6LS' resulted from a cross between 'A87149-4' and 'A88108-7'. The selection criteria were yield, maturity, tuber appearance and uniformity, specific gravity, resistance to tuber defects, storage fry colour and disease resistance.

Tests & Trials: Trials for 'A93157-6LS' 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 tables for 'Premier Russet' with reference variety 'Russet Burbank'

Plant height (cm)

  'Premier Russet' 'Russet Burbank'
mean 43.8 59.0
std. deviation 3.9 1.6

Leaf length (including petiole) (cm)

  'Premier Russet' 'Russet Burbank'
mean 27.4 35.9
std. deviation 3.0 2.1

Leaf width (cm)

  'Premier Russet' 'Russet Burbank'
mean 14.5 25.3
std. deviation 2.2 1.9

Click on image for larger view
Premier Russet
Potato: 'A93157-6LS' (right) with reference variety 'Russet Burbank' (left)

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