, Volume 150, Issue 1–2, pp 271–280 | Cite as

Interspecific Hybridization in the Genus Lens Applying in Vitro Embryo Rescue

  • Richard Fratini
  • Ma Luisa Ruiz


Four different hybridization experiments were carried out to obtain interspecific hybrids with Spanish cultivars of lentil (Lens culinaris M.). In hybridization experiments I and II, undertaken with only pollination and pollination with the addition of gibberellic acid after fertilization, respectively, no lentil hybrids were recovered. A single interspecific hybrid with L. odemensis was obtained in experiment III using the embryo rescue protocol of Cohen et al. (1984), in this case, a crossing efficiency of 0.11% and a rescue efficiency of 2.5% were obtained. Hybridization experiment IV used a specific embryo rescue protocol developed in this study. In this experiment, ovule-embryos of 18 DAP were cultured on MS salts with 1% sucrose and 1 μ M IAA + 0.8 μ M KN; after two weeks, embryos were released from the ovular integuments and cultured on the same medium for another two weeks in upright position. Afterwards, the embryos were transferred to test tubes containing the same medium and one month later plantlets were obtained. Using the above protocol, out of a total of 1707 pollinations, 6 interspecific hybrids with L. odemensis, 2 with L. nigricans and one with L. ervoides were recovered, yielding on average a crossing efficiency of 0.53% and an average rescue efficiency of 8.26%. Taking into consideration only the interspecific crossing blocks in which hybrids were recovered, the crossing efficiency with L. odemensis was 9%, while with both L. nigircans and L. ervoides the crossing efficiencies were 3%. Rescue efficiencies based on hybrids recovered per number of ovules cultured ranged between 50–100%.


embryo and ovule culture interspecific hybridization legume Lens lentil hybrids 



days after pollination


gibberellic acid


indole-3-acetic acid




polymerase chain reaction


random amplified polymorphic DNA




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Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  1. 1.Área de Genética, Facultad de Ciencias Biológicas y AmbientalesUniversidad de LeónLeónSpain

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