Embryo position of <i>Castanopsis sclerophylla</i> (Fagaceae) seeds with recalcitrant storage behavior differs from <i>Quercus</i> genus but response to desiccation shows no difference

In many but not all recalcitrant Quercus seeds, water loss during drying only occurs through the scar. Consequently, embryo axis sitting on opposite side of scar is well protected from desiccation. However, whether such a mechanism common throughout Fagaceae species unexplored. Similarly, little known about desiccation response other genera. Germination and tolerance Castanopsis sclerophylla (Lindl. &amp; Paxton) Schottky (Fagaceae) were studied by seeds with silica gel. Fresh had moisture content (MC) 36% germinated to 92.5% when incubated at 15/20 °C. Drying 22.5% 20.7% MC decreased germination 27% 5%, respectively, indicating that are recalcitrant. X-ray computed tomography photomicrographs showed C. located just below Regardless occurring either or whole pericarp, was deemed unavoidable. Nevertheless, percentage exceptional similarities species.