Seed coat related dormancy is observed in

Seed coat-related dormancy is observed in Ber, Walnuts as well as Guava.
Seeds with seed coat dormancy can remain on/in the ground without germinating until the seed coat allows water and oxygen to enter the seed or eliminate the inhibiting chemicals.
Exogenous dormancy is when the seed coat is too durable for moisture to infiltrate, effectively preventing germination. Endogenous dormancy occurs due to chemical changes within the seed's embryo.