Table 2. Descriptive names of the 27 morphological characters examined.

The descriptor list

Morphological Characters

Plant

  Growth habit type

  Plant Height at flowering stage

Tuber

  General tube shape

  Unusual tuber shape

  Predominant tuber skin colour

  Secondary tuber skin colour

  Distribution of secondary tuber colour

  Tuber skin type

  Predominant tuber flesh colour

  Secondary tuber flesh colour

  Distribution of secondary tuber flesh colour

  Depth of tuber eyes

  Note of eyes per tuber

Leaf

  Abaxial leaf pubescent

  Adaxial leaf pubescent

Stems

  Number of the primary stem

  Stem colour

  Stem cross section

Phenology

  Day to formation of the first floral button

  Day at beginning of flowering

  Day at beginning of berry formation

  Day to harvest maturity

Flower

  Calix colour

  Predominant flower colour

  Secondary flower colour

Fruit

  Fruit colour

  Number of fruits

  Fruition presence

Disease reaction data

  Evaluation to potato late blight (Phytophthora infestans)