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Frog egg-like body (FELB), a novel somatic embryogenesis (SE) structure first observed in Solanum nigrum, was induced in Rorippa indica with a new method different from that for FELB induction in S.nigrum.For the new method NaCl-mediated salt and mannitol-mimicked drought stresses were adopted to induce FELBs in R.indica instead of plant growth regulators (PGRs) used in S.nigrum FELB induction under a low light condition.