Task: Class Definition Understanding (ontology: Food_Agriculture/Crop_Ontology)

Which of the following definitions best describes 'Growing degree days flowering method'?

A. Total phenolics was measured on all fruit pulp samples by combining fruit and any juice lost during thawing in a zip top bag. Fruit was homogenized by rolling a weighted glass bottle over the bag, crushing the fruit and achenes. Homogenate was tested for titratable acid and then 1.5 mL was saved in three 2 mL tubes and stored at −80 °C. Thirty minutes prior to testing, one vial of each of the stored samples was thawed, vortexed and centrifuged. The determination of total phenolics was performed using the the concept as described by Waterhouse (2002) modified for use in 90-well, flat-bottomed microplates (Greiner Bio-One, Monroe, NC, USA).
B. Record the mean of daily maximum and minimum temperature, minus the base of 10 °C using appropriate weather station data beginning 1 January and accumulated throughout the year.
C. Record the Julian date when first fruit ripens at a specific location.
D. Flow Cytometry determination using DAPI with internal standard = Ilex crenata Fastigiata. Performed by Plant Cytometry Services, The Netherlands.

Answer: Record the mean of daily maximum and minimum temperature, minus the base of 10 °C using appropriate weather station data beginning 1 January and accumulated throughout the year.