Twister

Plant and tuber

• Maturity
  Maincrop | 5
• Tuber shape
  Round oval
• Flesh Colour
  Yellow | 7
• 5 low | 9 high
  Tuber number
  Average | 6
• 5 small | 8 large
  Tuber size
  Quite large | 7
• Skin colour
  Yellow
• Flower colour
  Light purple
• 4 none | 8 many
  No. of berries
  Below average | 5,5
• 4 slow | 8 fast
  Foliage: - initial development
  Average | 7
• 4 slow | 8 fast
  Foliage: - final development
  Quite good | 7,5
• Foliage: - selectability
  Average | 6,5
• 4 weak | 8 firm
  Foliage: - firmness
  Quite firm | 7
• Lightsprout colour
  Red violet
• 4 irregular | 8 regular
  Uniformity of shape
  Regular | 7
• 5 irregular | 8 regular
  Uniformity of size
  Quite regular | 6,5
• 3 insufficient | 8 excellent
  Skin finish
  Good | 7

Quality characteristics

• 6 average | 9 high
  Average yield
  Quite high | 7,5
• 300 low | 500 high
  Underwater weight
  345
• A firm | AB rather firm | B rather floury | BC floury | C floury
  Cooking type
  Rather firm | AB
• 4 short | 8 long
  Dormancy
  Long | 8
• Resistance to harvest damage
  Minimum sensitive | 7
• 4 very sensitive | 8 minimum to none sensitive
  Secondary growth
  Quite sensitive | 6,5
• 4 very sensitive | 8 minimum to none sensitive
  Growth cracks
  Quite sensitive | 6,5
• 4 very sensitive | 8 minimum to none sensitive
  Black spot
  Minimum to nonsensitive | 8
• 17% low | 26,5% high
  Dry matter content
  19,0%
• 5 moderate | 8 excellent
  Dry matter distribution
  -
• 1 very low | 11 quite high
  TGA level
  5,63
• 4 very sensitive | 8 minimum to none sensitive
  Raw discolouration
  Quite sensitive | 6
• 4 very sensitive | 8 minimum to none sensitive
  Discolouration after cooking
  Quite sensitive | 6
• 4 unsuitable | 8 excellent
  Suitable for chipping
  Quite difficult | 5
• 4 unsuitable | 8 excellent
  Suitable for crisping
  -

Disease resistances

• Late blight foliage
  Minimum to non susceptible | 9
• Late blight tuber
  Minimum to non susceptible | 9
• Common scab
  Minimum susceptible | 6
• PCN Ro 1/4
  Resistant | 9
• PCN Ro 2/3
  Susceptible | 1
• PCN Pa 2 Pallida
  Susceptible | 1
• PCN Pa 3 Pallida
  Susceptible | 1
• Powdery scab
  Very susceptible | 4
• Fusarium
  Minimum susceptible | 6
• Blackleg
  -
• Black dot
  Minimum susceptible | 6,5
• Spraing
  Minimum susceptible | 6
• Leafroll
  -
• Virus - A
  -
• Virus - X
  -
• Virus - Yn
  Minimum to non susceptible | 8
• Virus - Yntn (tuber symptoms)
  Minimum susceptible | 7
• Wart disease F1
  Moderate susceptible | 8
• Wart disease F6
  -
• Wart disease F18
  -