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[EN] Commercial varieties of eggplant, Solanummelongena, are vulnerable to future challenges related to the effects of climate change. It is therefore important to provide plant breeders and farmers with plant material that can meet these new challenges by exploiting some of the natural abilities of wild relatives.The aim of this study was to appreciate the transmissibility of interesting traits to the descendants by evaluating the agro-morphologic diversity of 8 accessions of S. melongena, 8 accessions of 6 wild or cultivated relatives and 36 interspecific progenies. Mean values of agro-morphologic traits revealed heterosis effects for vegetative growth characteristics in interspecific hybrids between S. melongena and wild relatives. A Principle Component Analysis identified three morpho-groups that discriminate S. insanum, S. anguivi and S. dasyphyllum, the respective wild ancestors of the three main cultivated eggplant species, S. melongena, S. aethiopicum and S. macrocarpon. In addition, interspecific hybrids belong to the same morpho-groups as the wild parental accessions, which could therefore carry dominant alleles of genes controlling the expression of these agro-morphologic traits. In general, fertile interspecific hybrids have values of production characteristics intermediate between those of parental accessions, suggesting the involvement of genes with additive effects in the expression of these traits. ; This work was undertaken as part of the initiative Adapting Agriculture to Climate Change: Collecting, Protecting and Preparing Crop Wild Relatives, which is supported by the Government of Norway. The project is managed by the Global Crop Diversity Trust with the Millennium Seed Bank of the Royal Botanic Gardens, Kew and implemented in partnership with national and international gene banks and plant breeding institutes around the world. For further information, see the project website: http://www.cwrdiversity.org/. ; Kouassi, KBA.; Kouassi, AB.; Prohens Tomás, J.; N'gbesso, MFDP.; Akanvou, L.; ...

10 19 6 1 ; S ; [EN] Commercial varieties of eggplant, Solanummelongena, are vulnerable to future challenges related to the effects of climate change. It is therefore important to provide plant breeders and farmers with plant material that can meet these new challenges by exploiting some of the natural abilities of wild relatives.The aim of this study was to appreciate the transmissibility of interesting traits to the descendants by evaluating the agro-morphologic diversity of 8 accessions of S. melongena, 8 accessions of 6 wild or cultivated relatives and 36 interspecific progenies. Mean values of agro-morphologic traits revealed heterosis effects for vegetative growth characteristics in interspecific hybrids between S. melongena and wild relatives. A Principle Component Analysis identified three morpho-groups that discriminate S. insanum, S. anguivi and S. dasyphyllum, the respective wild ancestors of the three main cultivated eggplant species, S. melongena, S. aethiopicum and S. macrocarpon. In addition, interspecific hybrids belong to the same morpho-groups as the wild parental accessions, which could therefore carry dominant alleles of genes controlling the expression of these agro-morphologic traits. In general, fertile interspecific hybrids have values of production characteristics intermediate between those of parental accessions, suggesting the involvement of genes with additive effects in the expression of these traits. This work was undertaken as part of the initiative Adapting Agriculture to Climate Change: Collecting, Protecting and Preparing Crop Wild Relatives, which is supported by the Government of Norway. The project is managed by the Global Crop Diversity Trust with the Millennium Seed Bank of the Royal Botanic Gardens, Kew and implemented in partnership with national and international gene banks and plant breeding institutes around the world. For further information, see the project website: http://www.cwrdiversity.org/. Kouassi, KBA.; Kouassi, AB.; Prohens Tomás, J.; N'gbesso, MFDP.; ...

[EN] Introgression breeding can contribute to broadening the genetic background of eggplant (Solanum melongena). We used six eggplant varieties and 44 interspecific hybrids between these eggplant accessions and 10 accessions of wild relatives from the primary genepool species S. insanum and secondary genepool species S. anguivi, S. dasyphyllum, S. incanum, S. lichtensteinii, and S. tomentosum to obtain first backcross generations to S. melongena. Pollen viability in cultivated and wild parents and interspecific hybrids with S. insanum was high, while for interspecific hybrids with secondary genepool species it was variable. First backcross generations to S. melongena were obtained with interspecific hybrids of all the wild species, with the best results being obtained in crosses with hybrids between S. melongena and S. insanum. However, ample differences were observed among eggplant varieties in the success of the crosses. Additionally, the six eggplant varieties were crossed with secondary genepool species S. campylacanthum, S. lidii and S. vespertilio and with tertiary genepool species S. bonariense, S. elaeagnifolium and S. sisymbriifolium with the aim of obtaining new interspecific hybrids. Successful interspecific hybridization was achieved with the three new secondary genepool species tested and, using embryo rescue, with the tertiary genepool species S. elaeagnifolium. The new backcross generations and interspecific hybrids obtained will contribute to broadening the genetic background of the eggplant and to the genetic enhancement of this crop. ; This work was undertaken as part of the initiative "Adapting Agriculture to Climate Change: Collecting, Protecting and Preparing Crop Wild Relatives", which is supported by the Government of Norway. The project is managed by the Global Crop Diversity Trust with the Millennium Seed Bank of the Royal Botanic Gardens, Mew and implemented in partnership with national and international gene banks and plant breeding institutes around the world. For further information ...