Very numerous and tiny concentric cracks can be observed in this stalk area.  <b> Physiological microcracks </b> (russeting)
<b> Physiological microcracks </b>
These more or less substantial bursts locally give the surface of the fruits a harsh touch and modify the development of their color: they remain green when ripe or progressively blacken in the area concerned.  ("<i> rain check </i>") <b> Physiological microcracks </b>
These fruits are variously affected by the “rain check”, characterized by the presence of more or less concentric bursts in the stalk zone.  <b> Physiological microcracks </b>