Mohamed Seif El-yazal

Seed Dormancy and Germination Mohamed Seif El-yazal

Seed dormancy is a physiological phenomenon in plants, which is caused by external or internal factors, and prevent of seeds germination, even in optimal conditions. Seed dormancy may be caused due to hard seed coat, immature embryo, rudimentary embryo and inhibitors materials. Seed dormancy is broken with soil melting and freezing, microorganism?s activity, forest fires, soil activity, and being eaten by animals, in normal conditions. This book explains the causes of seed dormancy, morphological, physiological and metabolic changes in seeds during and after dormancy breaking and the new methods for breaking seed dormancy.