that leads to the completion of germination (Hilhorst, 1993; Vleeshouwers et al., 1995). Changes in the phosphorylating
activity of membrane-associated, Caz+-dependent protein kinases that lead to dormancy or germination have been
proposed as well (Trewavas, 1988). However, in the absence of any corroborating evidence, these suggestions must be
regarded only as stimulating bases for future research.