Crossability and Diversity of Eggplants and Their Wild Relatives

Daunay, Marie‐Christine; Salinier, Jérémy; Aubriot, Xavier

doi:10.1007/978-3-319-99208-2_11

Cited by 11 publications

(8 citation statements)

References 134 publications

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“…Considering the three wild species ( S. incanum , S. insanum , and S. anguivi ) for which we were able to obtain interspecific hybrids with S. melongena , in general, our results are in agreement with previous studies [ 25 ]. In this respect, Devi et al [ 26 ], found that S. incanum was highly crossable with the cultivated eggplant genotypes.…”

Section: Resultssupporting

confidence: 92%

Development of Interspecific Hybrids between a Cultivated Eggplant Resistant to Bacterial Wilt (Ralstonia solanacearum) and Eggplant Wild Relatives for the Development of Rootstocks

Rakha

Namisy

Chen

et al. 2020

Plants

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Bacterial wilt caused by Ralstonia solanacerum is one of the most economically and destructive eggplant diseases in many tropical and subtropical areas of the world. The objectives of this study were to develop interspecific hybrids, as potential rootstocks, between the eggplant (Solanum melongena) bacterial wilt resistant line EG203 and four wild accessions (S. incanum UPV1, S. insanum UPV2, S.anguivi UPV3, and S. sisymbriifolium UPV4), and to evaluate interspecific hybrids along with parents for resistance to bacterial wilt strains Pss97 and Pss2016. EG203 was crossed successfully with wild accessions UPV2 and UPV3 and produced viable seeds that germinated when wild accessions were used as a maternal parent in the crosses. In addition, viable interspecific hybrids between EG203 and UPV1 were obtained in both directions of the hybridization, although embryo rescue had to be used. Hybridity was confirmed in the four developed interspecific hybrid combinations with three SSR markers. EG203 was resistant to both strains Pss97 and Pss2016, while UPV1 and UPV3 were, respectively, resistant and moderately resistant to Pss2016. The four interspecific hybrids with UPV2, UPV3, and UPV1 were susceptible to both bacterial wilt strains, indicating that the resistance of EG203, UPV1, and UPV3 behaves as recessive in interspecific crosses. However, given the vigor of interspecific hybrids between eggplant and the three cultivated wild species, these hybrids may be of interest as rootstocks. However, the development of interspecific hybrid rootstocks resistant to bacterial wilt will probably require the identification of new sources of dominant resistance to this pathogen in the eggplant wild relatives.

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Section: Resultssupporting

confidence: 92%

Development of Interspecific Hybrids between a Cultivated Eggplant Resistant to Bacterial Wilt (Ralstonia solanacearum) and Eggplant Wild Relatives for the Development of Rootstocks

Rakha

Namisy

Chen

et al. 2020

Plants

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“…They belong to the Solanum genus and comprise of cultivated species such as the Gboma eggplant (Solanum macrocarpon L.), the scarlet eggplant (Solanum aethiopicum L.), and Solanum anguivi, which are grown mostly in Africa for their fruits and leaves. Both S. aethiopicum L. and S. macrocarporn L. are native to Africa (Daunay, Lester, & Ano, 2001), whereas common eggplant (S. melongena) is of Asian origin (Meyer, Karol, Little, Nee, & Litt, 2012). The scarlet eggplant (S. aethiopicum L.) is one of the five most important vegetables of tropical Africa, together with tomato, onion, pepper, and okra (Lester & Seck, 2004;Lim, 2015;Maundu, Achigan-Dako, & Morimoto, 2009;Schippers, 2000).…”

Section: Introductionmentioning

confidence: 99%

“…These substances are substrates for the polyphenol oxidase enzyme whose activity leads to the rapid browning of cut or injured tissues. In addition, they contribute to the fruit organoleptic properties because they generally impart a bitter taste and interfere with other molecules during the cooking process (Daunay et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

Effect of drying methods on the retention of bioactive compounds in African eggplant

Mbondo

Owino

Ambuko

et al. 2018

Food Science & Nutrition

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African eggplants (Solanum aethiopicum L.) are a rich source of bioactive compounds and functional constituents that are beneficial to human health. However, the short shelf life of these vegetables can be a major cause of postharvest losses especially during peak harvesting season. Drying is one of the most convenient technologies for the production of shelf stable food products. However, drying can lead to considerable loss of the available bioactive compounds due to thermal degradation depending on the drying method and temperature conditions. This study investigated the effect of four drying methods (solar, oven, vacuum, and freeze) on the retention of total phenolics, beta‐carotene, antioxidant capacity, and lycopene in five African eggplant (S. aethiopicum) accessions (sangawili, manyire green, S00047A, AB2, and aubergine blanche). Samples were dried up to ~10% moisture content. The fresh and dried samples were analyzed for total phenolic content, antioxidant capacity, beta‐carotene content, and the lycopene content. In the fresh state, beta‐carotene, total phenolic content, and free radical scavenging activity ranged between 14.75 ± 0.50 and 29.50 ± 0.77 mg/100 g db, 751.21 ± 1.73 and 1,363.95 ± 2.56 mg/100 g GAE db, and 99.58 and 325.61 mg/ml db IC 50 value, respectively. The accession S00047 showed highest total phenolic content and lowest IC 50 value in the fresh samples. The results also showed that total phenolic content, antioxidant capacity, and beta‐carotene contents were significantly (p < .05) affected by drying method and drying temperature with freeze‐drying presenting the highest retention. Overall, 36.26%s–95.05% (total phenolics) and 31.44%–99.27% (beta‐carotene) were retained during freeze‐drying. Lycopene was only detected in the dried samples of the accession manyire green but absent in all the fresh samples of all the accessions. This study demonstrates that freeze‐drying was the most effective in retaining the highest bioactive compounds in African eggplants.

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“…Eggplant cultivars are susceptible to numerous pests and diseases, with breeding studies being concentrated on disease resistance breeding (Daunay et al 2019;Kumar et al 2020). The most significant research achievements have been made on breeding for resistance to soil-borne pathogens, with notable success (Barchi et al 2018;Namisy et al 2019;Saini & Kaushik 2019).…”

Section: Discussionmentioning

confidence: 99%

Screening of eggplant genotypes for resistance to bacterial wilt disease caused by Clavibacter michiganensis subsp. michiganensis

Boyaci¹,

Kabaş²,

Aysan³

et al. 2021

Plant Prot. Sci.

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Clavibacter michiganensis subsp. michiganensis (Cmm) is one of the phytopathogenic bacteria causing bacterial wilt disease and severe yield losses in tomatoes and other solanaceous vegetables. Although there are some reports on Cmm infections in eggplants (Solanum melongena), there is no information available on the resistance sources and genetic control of the resistance to Cmm in this crop. We performed a search for resistance sources to Cmm in eggplants, in a set of 46 genotypes including landraces, inbred lines and cultivars and some cultivated and wild relatives, as well as an analysis of the genetic control of the resistance. A mixture of different Cmm strains from different genomic groups was used for the screening. Plants were inoculated through the injection of 10 µL of a Cmm suspension at a concentration of 10<sup>7</sup> cfu/mL in a single point of the stem. The symptoms were recorded at nine weeks after the inoculation with a 0–4 symptoms scale. The differences were observed in the symptoms in the collection evaluated, with the disease severity index of the genotypes ranging from 0.00 to 4.00. While 31 genotypes displayed no symptoms, three cultivated eggplant genotypes were highly susceptible. Reciprocal F1 and F2 generations were obtained from the crosses between the most susceptible genotype (CT30) and a resistant one (CT49). The genetic control of the resistance adjusted well to one dominant and one recessive gene model underlying the resistance to Cmm. These results are important for selection and breeding for resistance to Cmm in eggplants.

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Crossability and Diversity of Eggplants and Their Wild Relatives

Cited by 11 publications

References 134 publications

Development of Interspecific Hybrids between a Cultivated Eggplant Resistant to Bacterial Wilt (Ralstonia solanacearum) and Eggplant Wild Relatives for the Development of Rootstocks

Development of Interspecific Hybrids between a Cultivated Eggplant Resistant to Bacterial Wilt (Ralstonia solanacearum) and Eggplant Wild Relatives for the Development of Rootstocks

Effect of drying methods on the retention of bioactive compounds in African eggplant

Screening of eggplant genotypes for resistance to bacterial wilt disease caused by Clavibacter michiganensis subsp. michiganensis

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