Breaking of coat-imposed D/2 Physical methods: to damage the seed coat and make it more permeable Chemical methods: to soften the cell walls of seed coat and endosperm by cell wall degrading enzymes Seed germinationBreaking of coat-imposed dormancy Physical methods: to damage the seed coat and make it more permeable. Chemical methods: to soften the cell walls of seed coat and endosperm by cell wall degrading enzymes. Seed germination ME LE