Effect of dormancy breaking treatments on testa ultrastructures and water uptake patterns of Albizia procera seed (original) (raw)

Seed Science and Technology, 1999

Abstract

Ultrastructures of the hilar region play a major role in water uptake of seeds. Mechanical scarification and concentrated sulphuric acid treatment erase the testa-imposed dormancy in seeds. Albizia procera Benth. (Fabaceae) produces a large number of testa-imposed dormant seeds which possess the ability to germinate 100% after either mechanical scarification or 30 minutes concentrated sulphuric acid treatment. These treatments affect the ultrastructures of hilar region and also the testa surface. The affected regions facilitate the water uptake which result in 100% germination.

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