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Accumulator: A New Short Storage Potato Chipping Variety with Exceptional Yield Potential
F.M. Navarro1, B.D. Bowen2, H.I. Groza2, A.J. Bussan1, J. Jiang1 and J.P. Palta1
¹ Department of Horticulture² Agricultural Research Stations
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Introduction
The goal of the UW Potato Breeding Program is
to develop potato cultivars that are genetically superior and that satisfy or exceed the standard for yield and grade in the fresh market and processing market
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Short Storage Chipping Lines (An option to replace
Atlantic) Atlantic (Webb, 1978) has been an excellent off-
the field variety due to its high yield and specific gravity and general adaptation. Main defects are internal defects i.e. internal heat necrosis and hollow heart and black spot bruise and common scab susceptibility. No able to store as chip-stock
Short Storage Chipping Breeding
Objectives
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Reliable Short Storage
High tuber yield ≥ Atlantic
High adaptation across potato regions
Consistent specific gravity similar to Atlantic
or in the acceptable range.
Size grade
Reduced Internal Defects (i.e. HH, IHN-
South)
Disease Resistance Atlantic has some tolerates Verticillium
wilt, early blight, and it is moderately susceptible to common scab.
Challenges in Finding a Short Storage variety to replace Atlantic
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Accumulator (W2324-1) Pedigree: Snowden x S438
Yield potential > Atlantic and gravity is between Atlantic and Snowden
Produces good chip quality off the field and in short storage (0-3 months)
Low glycoalkaloid content, much lower than Snowden
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Accumulator (W2324-1) Pedigree: Snowden x S438
Yield potential: Accumulator has scored record yields in experiments and on-farm trials in WI and Southern states, usually ≥20% over Atlantic
Accumulator Atlantic
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Yield (cwt/a) and Grade Accumulator (W2324-1) vs.
Atlantic WI Breeding Trials (1999, 2000 )
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Hollow Heart % Accumulator (W2324-1) vs. Atlantic and Snowden
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US#1 Yield (cwt/a) Accumulator (W2324-1) vs.
Atlantic WI State Trials (2001-03 )
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2006 Tuber Bulking Rate Accumulator (W2324-1) vs.
Snowden 2006 Spacing Trials: Tuber weight (oz)
TraitW2324-1
Snowden
Stems/pt 3.4 4.2
Tubers/pt >1cm Jul17
15.6 9.7
• High yield of Accumulator can be explained by the large number of tubers per plant • This larger number of tubers just like Snowden can use additional time for bulking late in the season
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WI Specific Gravity: Accumulator (W2324-1) vs.
Atlantic (8 years)
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Specific Gravity (8 WI trials): Atlantic>Accumulator> Snowden
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Tuber Yield in the US-Northern States
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North Central 2006 Yield (cwt/a) Accumulator (W2324-1) vs.
Atlantic
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North Central 2007 Yield (cwt/a) Accumulator (W2324-1) vs.
Snowden
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USPB/SFA Trial: Yield (cwt/a) Accumulator (W2324-1) vs.
Atlantic and SnowdenUS-North
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Accumulator: Ability of chips to have good color after short storage better than Atlantic
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Is Accumulator (W2324-1) an Option for the US South?
• Yield• Specific Gravity• Internal Heat Necrosis• Chip color
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USPB/SFA Trial: Yield (cwt/a) Accumulator (W2324-1) vs.
SnowdenUS-South
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USPB/SFA Trial: Yield (cwt/a) Accumulator (W2324-1) vs.
SnowdenUS-South
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Accumulator tolerates IHN much better than Atlantic but can be affected under
extreme heat stress (i.e. NC 2010)
2011
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Fry Color off the Field (1-5 Scale, 1 best): Accumulator vs. Atlantic
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Fry Color off the Field (Agtron values, larger is better): Accumulator vs.
Atlantic
SFA Missouri
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Limitations of Accumulator:
• Deep eyes• More susceptible to common scab• Manage (Avoid) risk High reward
Accumulator
Atlantic
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Trait Accumulator (W2324-1)
Yield Higher than Atlantic (≥20%)
Specific Gravity Atlantic>Accumulator>Snowden
Tuber Internal Quality
HH: very low to 0%, IHN: Much better
Tuber Development Continues to bulk after Atlantic is done bulking
Short Storage Ability Accumulator stored for three months may fey similar to Atlantic off the field
Vine Vigor Strong
Verticillium wilt Tolerant
Early Blight Some tolerance
Overall Benefits of Accumulator vs Atlantic
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Accumulator: A New Short Storage Potato Chipping Variety with Exceptional Yield Potential
F.M. Navarro1, B.D. Bowen2, H.I. Groza2, A.J. Bussan1, J. Jiang1 and J.P. Palta1
¹ Department of Horticulture² Agricultural Research Stations