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Artificial (temperature controlled) pretreatment without medium for deeply or shallowly dormant tree seeds.
The advantages of this method in comparison to the “easy” and “moderate” methods are that i) the pretreatment temperatures are less susceptible to the vagaries of the weather and ii) splitting / chitting / germinating of seeds during the pretreatment is less likely to occur. The absence of the moisture containing medium prevents the cells of the least dormant seeds from absorbing this water, elongating and beginning their germination process prematurely.
a Seed splitting/chitting/germinating is less likely to occur in this method compared to others due to the absence of a water containing medium. This prevents the cells of non-dormant seeds from imbibing, elongating and hence germinating prematurely.
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