Greetings.

Human and animal eggs and sperm are routinely frozen for preservation; and read something about fertilized embryos getting the same treatment. 

What about plants ?   Is there a way ?  Can a germinated young plant, or perhaps a grown one, be preserved until a future planting/growing season ?  Can annual plants be preserved/suspended from winter death until much later to continue their growth, other than greenhouses * ?  I know seed banks keep thousands of varieties frozen for any future needs, but are those non-germinated seeds embryos ?

This thread triggered from the uncertainty from a seed to germinate.  I see there is no way to assure success to germinate a seed even by the most expert 'green thumbs'

* Would an annual plant dying by winter season continue to thrive if transplanted to a tropical weather, or there would be a collision with its genetics from unexpected weather ?

Today, found unexpectedly something of this elusive subject by total chance on television.  Freezing apple tree branches seems to be happening among other already known things.    Only at time stamp 18:20 

---> https://www.americasheartland.org/watch/season-13/?episode=1301-

Posting the finding if anyone is interested.

 

 

some plants you can freeze and save cuttings which germinate, others not. You can however save any plants cells by isolation of single cells in solution, you can look up the protocols in protocol books, and freezing these suspensions in 5-10% DMSO PBS buffer, or variant, 5% Glycerine, 5% DMSO PBS, and 20% Glycerine PBS (with a much lower survival rate) work from experience. These cells, turned into protoplast can theen be germinated using a petri dish hormone -> Callus -> root and shoot hormone protocol, or alternativly turned from callus -> gymnosperm like synthetic seeds which only have a 5-30% germination rate based on the individual plants. The synthetic seed protocol has been used in industry, and involves a waxlike calcium carbonate cellulose mixture again with rooting and shoot formation hormones that micro calluses are dipped into and then dried, only 2-3 hormones in total. The petri dish method is a, or is the main method for a large scale orchid market in the US, and several individual plant companies with individual plants in Holland.