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- W2000283264 abstract "Interspecific somatic hybrids between Solanum melongena L. (2n = 2x = 24) and two accessions of Solanum torvum Sw. (2n = 2x = 24) were produced in view of transferring resistance to two soil-born pathogens, Ralstonia solanacearum and Verticillium dahliae, from the wild species into the cultivated eggplant. All somatic hybrids were phenotypically homogenous and intermediate between the parents. Their hybrid nature was confirmed by analysis of isozymes and RAPDs. They showed reduced pollen viability, and all but one possessed the chloroplasts from either one or the other parent. As S. melongena and S. torvum chromosomes were morphologically indistinguishable, genomic in situ hybridisation (GISH) was applied to recognise the chromosomes from each parent in the hybrids. As expected, the selected tetraploid plants contained one complete set of chromosomes from each fusion partner. On spread preparations, the two parental genomes were not spatially separated at any time of the cell cycle. Translocation or recombinant chromosomes could not be demonstrated in the mitotic metaphase. Tests for resistance performed in vitro by using suspensions of two strains of R. solanacearum (race 1 and 3) and filtrate of culture medium of one strain of V. dahliae, revealed that S. melongena was susceptible, whereas both accessions of S. torvum had high levels of resistance. Except for two hybrid clones, which were found susceptible to race 3, as was S. melongena, all somatic hybrids tested showed good levels of bacterial and fungal resistance, either intermediate or as high as that of the wild parent." @default.
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- W2000283264 date "2003-05-01" @default.
- W2000283264 modified "2023-10-13" @default.
- W2000283264 title "GISH confirmation of somatic hybrids between Solanum melongena and S. torvum: assessment of resistance to both fungal and bacterial wilts" @default.
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- W2000283264 doi "https://doi.org/10.1016/s0981-9428(03)00054-8" @default.
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