A REVIEW OF BREAKING SEED DORMANCY IN HAWTHORNS (CRATAEGUSSPP.)

Propagation of hawthorns (Crataegusspp.) is difficult, and vegetative methods are not responsive in a sufficient manner. So, seed propagation prevalently used to propagate hawthorns. However, hard endocarp embryo dormancy restrict the germination To overcome these restrictions, many treatments have been tested researches. Some them were magnificent others ineffective. It has resolved that warm cold stratification best for breaking seeds Thus far, no substitution found treatment release from dormancy, conventional point view. Besides, combination with other factors may reduce period temperature degrees stratification, instance, species, eliminating endocarp, growth regulators, chemical scarification. In this review, results will be referred studies break