7 CFR §201.56-8

1. (a)General description.
   1. (1)Germination habit: Epigeal dicot. (Due to the mucilaginous nature of the seed coat, seedlings germinated on blotters may adhere to the blotter and appear to be negatively geotropic.)
   2. (2)Food reserves: Cotyledons which expand and become photosynthetic.
   3. (3)Shoot system: The hypocotyl elongates carrying the cotyledons above the soil surface. The epicotyl usually does not show any development within the test period.
   4. (4)Root system: A primary root, with secondary roots usually developing within the test period.
2. (b)Abnormal seedling description.
   1. (1)Cotyledons:
      1. (i)Less than half of the original cotyledon tissue remaining attached.
      2. (ii)Less than half of the original cotyledon tissue free of necrosis or decay.
   2. (2)Epicotyl:
      1. (i)Missing. (May be assumed to be present if cotyledons are intact.)
      2. (ii)[Reserved]
   3. (3)Hypocotyl:
      1. (i)Deep open cracks extending into the conducting tissue.
      2. (ii)Malformed, such as markedly shortened, curled, or thickened.
   4. (4)Root:
      1. (i)None.
      2. (ii)Weak, stubby, or missing primary root with weak secondary or adventitious roots.
   5. (5)Seedling:
      1. (i)One or more essential structures impaired as a result of decay from primary infection.
      2. (ii)Albino.