Abstract
Cells of a 2-year-old suspension culture of rice (Oryza sativa L.), grown under 1.5% NaCl stress for 3 months, gave rise to plants through embryogenesis in different saline conditions. The high regeneration potential (59.6%) on salt-free medium decreased rapidly with increasing concentration of salt in the regeneration medium. At 1.25% NaCl, healthy shoots were developed in 14.9% of the cultures. Under 1.5% salt stress, embryo formation and embryo germination (6.1%) was observed but further development into plants was inhibited. Cells not pretreated with salt produced plants at a low frequency (2.6–4.2%) both in salt-free and low saline condition (0.75–1% NaCl). Cells pretreated for 3 months with 0.75% salt did not give rise to plants on all tested media. Plants regenerated from the salt-stressed cultures were transferred to soil and grew to maturity in a greenhouse.
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Abbreviations
- BA:
-
6-benzyladenine
- CH:
-
casein hydrolysate
- 2,4-D:
-
2,4-dichlorophenoxyacetic acid
- NAA:
-
1-naphthaleneacetic acid
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Binh, D.Q., Heszky, L.E., Gyulai, G. et al. Plant regeneration of NaCl-pretreated cells from long-term suspension culture of rice (Oryza sativa L.) in high saline conditions. Plant Cell Tiss Organ Cult 29, 75–82 (1992). https://doi.org/10.1007/BF00033611
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DOI: https://doi.org/10.1007/BF00033611