Cryopreservation of embryogenic cultures of 'Brewster' Litchi (Litchi chinensis sonn.) and its effect on hyperhydric embryogenic cultures.

Cryopreservation of embryogenic cultures induced from leaves of mature phase trees of Litchi chinensis Sonn. was performed following a vitrification method. Vitrification solution (PVS2) was utilized at two temperatures: 0 degree C and 25 degree C.