Abstract
In a five-step procedure, plants were regenerated from meristematic tissue initiated from nodal tissue in four pea cultivars (‘Espace’, ‘Classic’, ‘Solara’, and ‘Puget’). In step 1, stem tissue with one node (1-cm size) was subcultured on medium containing thidiazuron. As a result multiple shoots were produced, appearing normal or swollen at their bases. The multiple shoots were subcultured in the same medium, resulting in the formation of a green hyperhydric tissue in the swollen bases of the multiple shoots, which is fully covered with small buds [bud-containing tissue (BCT)]. In step 2, BCT fragments were isolated and subcultured in the same medium and, as a result, they were able to reproduce themselves in a cyclic fashion. In step 3, subculture of BCT on medium supplemented with a combination of gibberelic acid, 6-benzyladenine and α-naphthalene acetic acid (NAA), resulted in the formation of shoots, which were rooted in step 4 on medium supplemented with 0.5 mg/l NAA, indole-3-acetic acid (IAA) or indole-3-butyric acid. In step 5, in vitro plants were transferred to the greenhouse for acclimatisation and further development. The four varieties tested were all able to produce meristematic tissue, suggesting that its production is genotype independent.
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The authors wish to thank STW for financing this project as part of the PROFETAS program, and Adriaan van Aelst for performing the LT-SEM.
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Tzitzikas, E.N., Bergervoet, M., Raemakers, K. et al. Regeneration of Pea (Pisum sativum L.) by a cyclic organogenic system. Plant Cell Rep 23, 453–460 (2004). https://doi.org/10.1007/s00299-004-0865-0
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DOI: https://doi.org/10.1007/s00299-004-0865-0