THE ONSET AND DISAPPEARANCE OF RELATIVE DORMANCY OF OLIVE EMBRYOS AS AFFECTED BY AGE
Testing olive embryos, cv. Chalkidikis, for germination capacity, at 15-day intervals commencing at full bloom, showed that such embryos acquired the ability to germinate when they had reached half their full size (70 days AFB). This ability increased to a maximum, at 15C, when the embryos had completed their morphological development (100 days AFB). Germination occurred also at 20C but at a slower rate and lower percentages than those at 15C.
Testing for germinability of freshly collected to 11-year old embryos, showed that relative dormancy diminished progressively with time, during storage, and disappeared completely in embryos 4 years old, with a corresponding increase in their germination ability. In embryos older than these, germinability declined gradually as a result of deteriorating vigour due to old age. Embryos 11 years old had lost their ability to germinate.