Pomegranate tree

Question

Why are the kernels inside my pomegranate a brownish color? The fruit is the size of a large grapefruit and there are no visible pests.

Answer 1

It sounds like it may be heart rot - also known as black heart. Here is more information on the disease:
http://westernfarmpress.com/orchard-crops/pomegranate-growers-face-threat-black-heart-disease

http://ucanr.edu/sites/pomegranates/files/134012.pdf