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

Which of the following definitions best describes 'Cork defects percent - Transversal section protocol'?

A. Defects are quantified in the two transversal of 20 × 20 cm boards cut from the previous 30 × 30 cm boiled planks, and also in four strips of 20 × 1 cm (obtained from the same 30 × 30 cm samples), corresponding to transversal surfaces (two strips for each surface). Each of the four faces of the 20 × 20 cm boards and the two faces of the 20 × 1 cm strips were photographed with a camera (10 mega pixels resolution). The defect areas were measured by image analysis, defining the limiting color threshold by visual inspection, using the Leica QWin software (V3.X—Leica Microsystems, Germany). Lengths were calibrated using a calibration ruler. The two types of defects (cork porosity and nail inclusions) were measured separately and the defect areas were expressed as a percentage of the total area of cork under analysis.
B. Content measured by chemical analysis
C. Leaf gas exchange was assessed with a portable infrared gas analyzer (LI-6400; LI-COR Inc., Lincoln, USA) equipped with a fluorometer (LI-6400-40, LI-COR Inc., Lincoln, USA). Data was periodically collected from the youngest fully expanded leaf (5–9 h after photoperiod initiation), never extending a total period of 90 min. Block temperature was set at 28 ◦C, light intensity was set at 300 µmol photons m−2 s−1 and CO2 concentration was kept at 400 ppm with an air flow rate of 500 µmol s−1. Fs and Fm’ represent the steady state and maximum fluorescence measured under light adapted conditions.
D. Measured from soil to basis of the apical meristem or bud (depending of time in season) with a pole or a clinometer

Answer: Defects are quantified in the two transversal of 20 × 20 cm boards cut from the previous 30 × 30 cm boiled planks, and also in four strips of 20 × 1 cm (obtained from the same 30 × 30 cm samples), corresponding to transversal surfaces (two strips for each surface). Each of the four faces of the 20 × 20 cm boards and the two faces of the 20 × 1 cm strips were photographed with a camera (10 mega pixels resolution). The defect areas were measured by image analysis, defining the limiting color threshold by visual inspection, using the Leica QWin software (V3.X—Leica Microsystems, Germany). Lengths were calibrated using a calibration ruler. The two types of defects (cork porosity and nail inclusions) were measured separately and the defect areas were expressed as a percentage of the total area of cork under analysis.