Author
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Helgeson, John |
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Haberlach, Geraldine |
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Submitted to: Meeting Abstract
Publication Type: Proceedings Publication Acceptance Date: 6/17/1998 Publication Date: N/A Citation: N/A Interpretive Summary: Technical Abstract: First we will give a brief review of somatic hybridization of various Solanum species. Both asymmetric (where either the nucleus or cytoplasmic components of the protoplasts are inactivated) or symmetric fusions (where protoplasts are not modified) have been carried out. Goals have included the acquisition of new disease resistances, alteration of metabolic pathways and modified stress or herbicide sensitivities. The second part of the paper reports on details of the hybridizations between potato and other species carried out in the authors' laboratory. New disease resistances were obtained from wild Solanum species that are difficult or impossible to cross normally with potato. Though these efforts, novel resistances to late blight (Phytophthora infestans), early blight (alternaria solani), soft rot (Erwinia ssp), Potato virus Y (PVY), potato leaf roll virus (PLRV), and Verticillium wilt have been obtained. As the somatic hybrids produced by these symmetric fusions are often fertile, the resistances have been carried into potato breeding lines. The possibilities of sexual crossing of the hybrids has led to analyses of DNA introgression and recombination in these unique interspecific hybrid plants. |
