Germination of Hyphaena thebaica in numbers

[Phoenikakias]

Hyphaena thebaica belongs to those notorious spp, which produce a long sinker prior to an aerial part during germination. Therefore a deep pot or a lift of the seed in the air is necessary for a safe germination.  If future plant has to remain potted in a temperate climate, I consider second option the only way to go.  The real question arises then, how high should the seed be lifted and what should be the minimum pot height. Everything depends on how far from seed's operculum or in other words, how far along the sinker starts the root initiation zone of the seedling.  A pot 21 cm tall, is not enough without  a lift of the seed. In present case pot is 21 cm tall and root had already hit the bottom, despite that seed had been lifted in to the air at about 17.5 cm. Before emergence of the aerial part, seed had been sown in double pot (one inside the other) and sinker had reached 30 cm and the bottom of the lower pot without any sign yet of aerial emergence.  The bulbous area, which I believe to be the root initiation zone ( definitely not so bulbous as in Borassus) is almost at the surface of the 21 cm tall pot. The sinker started getting torn apart by the emerging leaf at about 7 cm distance from operculum. Has anyone made similar measures by the germination of H thebaica or any other sp in the genus for comparison?

[Phoenikakias]

1 hour ago, Phoenikakias said:

Hyphaena thebaica belongs to those notorious spp, which produce a long sinker prior to an aerial part during germination. Therefore a deep pot or a lift of the seed in the air is necessary for a safe germination.  If future plant has to remain potted in a temperate climate, I consider second option the only way to go.  The real question arises then, how high should the seed be lifted and what should be the minimum pot height. Everything depends on how far from seed's operculum or in other words, how far along the sinker starts the root initiation zone of the seedling.  A pot 21 cm tall, is not enough without  a lift of the seed. In present case pot is 21 cm tall and root had already hit the bottom, despite that seed had been lifted in to the air at about 17.5 cm. Before emergence of the aerial part, seed had been sown in double pot (one inside the other) and sinker had reached 30 cm and the bottom of the lower pot without any sign yet of aerial emergence.  The bulbous area, which I believe to be the root initiation zone ( definitely not so bulbous as in Borassus) is almost at the surface of the 21 cm tall pot. The sinker started getting torn apart by the emerging leaf at about 7 cm distance from operculum. Has anyone made similar measures by the germination of H thebaica or any other sp in the genus for comparison?

[Harry’s Palms]

I have to wonder how the germination process works in the wild. My friend sent me pictures of these growing in a field in Africa . It looked rather dry but the palms were huge . I’m guessing they were native . Harry