HYDRANGEA

Descriptors
Category: COMMENT
  1. OMERNIK LEVEL III ECOREGION (ECOREGION) Omernik level III ecoregion in which the germplasm was originally collected in nature.
  2. USDA COLD HARDINESS ZONE (USDA COLD HARDINESS ZONE) USDA Cold Hardiness Zone in which the germplasm was originally collected in nature.
Category: DISEASE
  1. LEAF SPOT (LEAF SPOT) Average percent leaf area affected by Xanthomonas campestris. Plants were exposed to naturally occurring inoculum under container nursery conditions inluding overhead irrigation. Values were obtained via Food Color Inspector software (v4.0). Sample of one leaf (fourth fully expanded from tallest shoot tip) per plant.
Category: MORPHOLOGY
  1. BRANCH NUMBER (BRANCH NUMBER) Average number of primary branches.
  2. INTERNODE LENGTH (INTERNODE LENGTH) Average internode length (measured in centimeters) on the tallest shoot. Calculated as average height divided by average number of nodes.
  3. NODE NUMBER (NODE NUMBER) Average number of nodes on the tallest shoot
  4. PLANT HEIGHT (PLANT HEIGHT) Average height of plant measured in centimeters.
  5. PLANT WIDTH (PLANT WIDTH) Average width of plant measured in centimeters.
Category: STRESS
  1. APR LT50 (APR LT50) Lowest temperature (°C) where 50% of stems survived in April. Determined via laboratory based controlled freezing assay; damage scored visually based on oxidative browning of vascular tissue.
  2. DEC LT50 (DEC LT50) Lowest temperature (°C) where 50% of stems survived in December. Determined via laboratory based controlled freezing assay; damage scored visually based on oxidative browning of vascular tissue.
  3. FEB LT50 (FEB LT50) Lowest temperature (°C) where 50% of stems survived in February. Determined via laboratory based controlled freezing assay; damage scored visually based on oxidative browning of vascular tissue.
  4. WINTER DAMAGE (FIELD WINTER DAMAGE) Ordinal score of observed winter damage on field grown two-year-old plants in Chanhassen, Minnesota. 1 = maximum winter damage; 5 = minimal winter damage.
  5. JAN LT50 (JAN LT50) Lowest temperature (°C) where 50% of stems survived in January. Determined via laboratory based controlled freezing assay; damage scored visually based on oxidative browning of vascular tissue.
  6. MAR LT50 (MAR LT50) Lowest temperature (°C) where 50% of stems survived in March. Determined via laboratory based controlled freezing assay; damage scored visually based on oxidative browning of vascular tissue.
  7. NOV LT50 (NOV LT50) Lowest temperature (°C) where 50% of stems survived in November. Determined via laboratory based controlled freezing assay; damage scored visually based on oxidative browning of vascular tissue.
  8. OCT LT50 (OCT LT50) Lowest temperature (°C) where 50% of stems survived in October. Determined via laboratory based controlled freezing assay; damage scored visually based on oxidative browning of vascular tissue.