Abstract
A protocol for rapid and efficient plant regeneration from protoplasts of red cabbage was developed by a novel nurse culture method. When the protoplasts of red cabbage were cultured in modified MS medium containing various combinations of BA, NAA and 2,4-D, they did not continue dividing due to browning. However, they successfully divided and formed micro-calli at a high efficiency when they were mixed and co-cultured with those of tuber mustard at a 1:1 ratio. The presence of tuber mustard protoplasts used as nurse cells was essential for sustainable divisions and colony formation of red cabbage protoplasts. Red cabbage-like plantlets were regenerated from these protoplast-derived calli at a frequency ranging from 33 to 56% in all the experiments where three cultivars of red cabbage were tested. Over 120 protoplast-derived cabbage plants were transferred to the greenhouse, and they showed no noticeable abnormalities in morphological features. Chromosome observation revealed that all of the plants examined had the normal chromosome number of cabbage (2n = 18), suggesting that no spontaneous fusion between the two species had occurred during protoplast culture.
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Chen, LP., Zhang, MF., Xiao, QB. et al. Plant Regeneration from Hypocotyl Protoplasts of Red Cabbage (Brassica Oleracea) by Using Nurse Cultures. Plant Cell, Tissue and Organ Culture 77, 133–138 (2004). https://doi.org/10.1023/B:TICU.0000016811.29125.18
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DOI: https://doi.org/10.1023/B:TICU.0000016811.29125.18