For medium term conservation o f horti cul tura1 species, various routine techniques a r e now employed extensively. For long term conservation, cryopreservation (-196°C) i s presently the only technique available. I t h a s been applied t o more t h a n 40 h o r t i c u l t u r a l s p e c i e s . However, i t s routine use s t i l l remains exceptional. The c u r r e n t development of new storage techniques i s discussed. Additional index words medium term storage : controlled atmosphere :

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... ng term storage : cryopreservation : encapsul ation/dehydrati on : vi t r i f i cation : domestic f r e e z e r