Summary
Protoplasts were isolated from leaf explants ofPassiflora edulis var.flavicarpa (the yellow passion fruit) and from cell suspensions of fivePassiflora species. Chemical fusion was performed using polyethylene glycol and the microcolonies obtained were transferred to growth medium to produce calli. Electrophoresis of soluble proteins and analysis of isoenzymes from calli produced from the fusion experiments were performed to select somatic hybrids. Specific polypeptide bands allowed the identification of somatic hybrids betweenP. edulis var.flavicarpa (+)P. alata, P. edulis var.flavicarpa (+)P. amethystina, P. edulis var.flavicarpa (+)P. cincinnata, P. edulis var.flavicarpa (+)P. giberti andP. edulis var.flavicarpa (+)P. coccinea. An average of 3 to 5% hybrid calli were obtained. With the exception of theP. edulis var.flavicarpa (+)P. coccinea, whole plants were recovered from all hybrids. These somatic hybrids showed 4n=36 chromosomes, which represents a further evidence of their hybridity.
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Communicated by J. J. Finer
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Dornelas, M.C., Tavares, F.C.A., de Oliviera, J.C. et al. Plant regeneration from protoplast fusion inPassiflora spp.. Plant Cell Reports 15, 106–110 (1995). https://doi.org/10.1007/BF01690264
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DOI: https://doi.org/10.1007/BF01690264