New Long and Short Storage Potato Chip Clones in the Wisconsin Breeding Program Pipeline Félix Navarro, Bryan Bowen, Mary Lemere, A. J. Bussan and Jiwan Palta Introduction A goal of the UW Potato Breeding Program is to develop genetically superior chip potato cultivars that satisfy or exceed the standard for yield and grade for the chip processing markets. Each year parental lines with desired traits are crossed and progenies are evaluated for fresh market and processing traits, emphasizing early selection evaluation in Central WI and other environments Objectives: • Development of stable long storage chippers to replace varieties such as Snowden and extend the storage chip ability beyond 7 months. • Developing stable short storage chipping varieties as alternative to Atlantic to minimize losses due to internal defects including internal heat nechrosis, hollow heart and others. Breeding and Selection Methods Each year: • Parental lines with desired traits are crossed and progenies are evaluated for fresh market and processing traits. • Early Selection: in field year 1-2 clones are evaluated for fresh market or processing traits at Rhinelander ARS. • Year 3-5: Clones are more intensively evaluated for agronomic, disease, fresh market and processing potential at various locations: Hancock ARS, Rhinelander ARS and out of WI. • Year 6+: Evaluation in WI (HARS, RARS, Antigo) regional, national trials and some locations in Canada (MB, ON, NB): Agronomic performance and processing traits. Results Long Storage Chipping Clones Long Storage Clones with Common Scab Resistance Lelah (W2717-5): (S440 x ND3828-15) Long storage chipping ability. Nice smooth tubers High and consistent specific gravity (1.080-1.090) Nicolet (W2133-1): (Snowden x S440) High Yield, similar to Snowden Specific Gravity: High, consistently over 1.080 Long Chip ability and resistance to chip stem end discoloration SpudPro Seed Availability (Foundation Seed Farm) W5015-12 (Brodick x White Pearl) Chips process from 48-50°F six to nine months Very high in high yielding locations. High stable gravity Accumulator (W2324-1) (Snowden x S438) Short Storage Chipper Maybe highest yield potential among US chipping varieties High and consistent specific gravity Tolerates VW, more susceptible to common scab than Snowden Yield Gravity Tundra (W2310-3): (Pike x S440) Cold storage chip quality from 48°-50°F storage for 6-9 months Specific Gravity: High, usually >1.084,higher than Snowden Moderate tolerance to common scab, better than Snowden and Atlantic 1.065 1.070 1.075 1.080 1.085 1.090 1.095 1.100 1.105 PA ND WI MI Mo PA ID ME NC WI 2007 USPB/SFA Trial 2010, USPB/SFA Trial Tundra Snowden Yield Gravity Yield Gravity Very competitive in low yielding years W5955-1 (Pike x C31-5-120) High yield, gravity .Chips 8-9 mo Size profile like Atlantic*** W6609-3 (Pike x Dakota Pearl) Longer storage, scab resistance*** Good gravity. Good chip @ 9mo Variety 2012 2013 2014 2015 SG E2 SG SG/Com SG E2 SG SG/Com Lelah SG SG/Com Tundra Nicolet Variety 2012 2013 2014 2015 2016 SG SG/Com E2 SG SG/Com E1 E2 SG SG/Com MT E1 E2 SG SG/Com W6609-3 MT E1 E2 SG SG/Com W5955-1 MT E1 E2 SG SG/Com Accumulator W5015-12 Note: MT = mini-tuber production, E1, E2, SG foundation seed categories, SpudPro on-farm test, SG/Com = certified seed

2013 Wisconsin New Chip Potato Varieties and Elite Clones

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Page 1: 2013 Wisconsin New Chip Potato Varieties and Elite Clones

New Long and Short Storage Potato Chip Clones in the Wisconsin Breeding Program Pipeline

Félix Navarro, Bryan Bowen, Mary Lemere, A. J. Bussan and Jiwan Palta

Introduction A goal of the UW Potato Breeding Program is to develop genetically superior chip potato cultivars that satisfy or exceed the standard for yield and grade for the chip processing markets. Each year parental lines with desired traits are crossed and progenies are evaluated for fresh market and processing traits, emphasizing early selection evaluation in Central WI and other environments Objectives:

• Development of stable long storage chippers to replace varieties such as Snowden and extend the storage chip ability beyond 7 months.

• Developing stable short storage chipping varieties as alternative to Atlantic to minimize losses due to internal defects including internal heat nechrosis, hollow heart and others.

Breeding and Selection Methods Each year: • Parental lines with desired traits are crossed and progenies are

evaluated for fresh market and processing traits. • Early Selection: in field year 1-2 clones are evaluated for fresh market

or processing traits at Rhinelander ARS. • Year 3-5: Clones are more intensively evaluated for agronomic, disease,

fresh market and processing potential at various locations: Hancock ARS, Rhinelander ARS and out of WI.

• Year 6+: Evaluation in WI (HARS, RARS, Antigo) regional, national trials and some locations in Canada (MB, ON, NB): Agronomic performance and processing traits.

Results

Long Storage Chipping Clones

Long Storage Clones with Common Scab Resistance

Lelah (W2717-5): (S440 x ND3828-15) Long storage chipping ability. Nice smooth tubers High and consistent specific gravity (1.080-1.090) Nicolet (W2133-1): (Snowden x S440)

High Yield, similar to Snowden Specific Gravity: High, consistently over 1.080 Long Chip ability and resistance to chip stem end discoloration

SpudPro Seed Availability (Foundation Seed Farm)

W5015-12 (Brodick x White Pearl)

Chips process from 48-50°F six to nine months Very high in high yielding locations. High stable gravity

Accumulator (W2324-1) (Snowden x S438) Short Storage Chipper Maybe highest yield potential among US chipping varieties High and consistent specific gravity Tolerates VW, more susceptible to common scab than Snowden

Yield Gravity

Tundra (W2310-3): (Pike x S440) Cold storage chip quality from 48°-50°F storage for 6-9 months Specific Gravity: High, usually >1.084,higher than Snowden Moderate tolerance to common scab, better than Snowden and Atlantic

1.0651.0701.0751.0801.0851.0901.0951.1001.105

PA ND WI MI Mo PA ID ME NC WI

2007 USPB/SFA Trial

2010, USPB/SFA Trial

Tundra SnowdenYield Gravity

Yield Gravity

Very competitive in low yielding years

W5955-1 (Pike x C31-5-120)

High yield, gravity .Chips 8-9 mo Size profile like Atlantic***

W6609-3 (Pike x Dakota Pearl) Longer storage, scab resistance*** Good gravity. Good chip @ 9mo

Variety 2012 2013 2014 2015 2016

E2 SG SG/Com