Black heart is a physiological disorder of

Black heart is a physiological disorder of Potato.
Physiological disorders of potato tubers encountered in this study included black heart, brown core, cold damage, greening, growth cracks, loose skin, enlarged lenticells, malformation, sprouting and vascular browning.
Blackheart is a physiological disorder caused by a lack of oxygen, leading to dark, necrotic cavities. The symptoms are an irregular-shaped area that turns black to blue-black with a distinct border.