Variety problems, excessive storage time, burns caused by excessive storage temperature, etc.

1. Variety issues: Some varieties of hanging melons themselves contain more melanin, and the interior appears black when mature.

2. The storage time is too long: If the melon seeds are stored for too long or the storage environment is not suitable, such as high temperature, problems such as browning, softening, and the formation of black spots will occur, causing the melon seeds to become black.

3. Burns caused by excessive storage temperature: Flowering hanging melons are artificially pollinated when the temperature is high and produce fruits. During the aging stage of the fruits, they are exposed to extreme high temperatures and burns occur. The fruits deteriorate and show signs of burns. black.