Abstract
Spring wheat (Triticum aestivum L.) zygotic embryos were successfully cryopreserved, without the addition of exogenous cryoprotectants, using only an abscisic acid (ABA) pretreatment. Optimum survival was obtained when embryos were cultured in vitro for 10 days on semisolid Murashige and Skoog (MS) nutrient medium supplemented with 0.5 mg/L (±) ABA prior to cryopreservation. The embryos resumed growth within three days when returned to MS medium devoid of ABA but containing 2mg/L 2,4-dichlorophenoxyacetic acid. The embryogenic calli produced from these embryos exhibited normal plant regeneration on auxin-free media. Changes in dw/fw ratio, as well as the esterified fatty acid and sucrose concentrations correlated positively with the development of tolerance to cryopreservation.
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Communicated by I. K. Vasil
NRCC Publication No. 33519
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Kendall, E.J., Kartha, K.K., Qureshi, J.A. et al. Cryopreservation of immature spring wheat zygotic embryos using an abscisic acid pretreatment. Plant Cell Reports 12, 89–94 (1993). https://doi.org/10.1007/BF00241941
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DOI: https://doi.org/10.1007/BF00241941