RT article T1 Production and cryoconservation of embryogenic cultures of mandarin and mandarin hybrids A1 Perez, RM A1 Mas, O. A1 Navarro, Luis A1 Durán-Vila, Núria AB Assays were performed to obtain embryogenic callus lines from nine mandarin and mandarin hybrid cultivars by in vitro culture of ovules collected from immature fruits six weeks after anthesis. All cultivars produced embryos and loose friable callus. The small proliferations of nucellar callus from cultured ovules were suitable to recover embryogenic callus lines by periodical subculturing to fresh medium. The embryogenic callus cultures were subjected to cryoprotection with 10% (v/v) (DMSO), freezing by slow cooling, storage in liquid nitrogen and thawing by fast warming. Whole plants from these cryopreserved cultures were recovered through embryogenesis. SN 0167-6857 YR 1999 FD 1999 LK http://hdl.handle.net/20.500.11939/4354 UL http://hdl.handle.net/20.500.11939/4354 LA en NO Perez, RM, Mas, O., Navarro, L., Duran-Vila, N. (1999). Production and cryoconservation of embryogenic cultures of mandarin and mandarin hybrids. Plant Cell Tissue and Organ Culture, 55(1), 71-74. DS MINDS@UW RD Jan 18, 2021