Solanum incanum s.l. (Solanaceae): taxonomic relationships between S. incanum, S. campylacanthum, S. panduriforme and S. lichtensteinii

Samuels, John

doi:10.1007/s12225-012-9373-5

Cited by 12 publications

(11 citation statements)

References 8 publications

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“…The vast majority of wild egglant relatives collected in Africa belong to this species, which is commonly and incorrectly called “Solanum incanum” (see discussion of S. incanum below). Our concept of this species corresponds to “Solanum incanum group A” and “Solanum incanum group B” of Daunay et al [23]; “group B” comprises those plants with narrower leaves from the southern part of the species distribution that have been recognised by some as S. delagoense , S. panduriforme or as infraspecific taxa based on those epithets [31]. From our examination of many herbarium specimens throughout Africa we conclude that this variation represents a north-south cline with leaf shape narrower in more southern populations.…”

Section: Resultsmentioning

confidence: 99%

“…Solanum campylacanthum can form dense stands of monomorphic plants through vegetative reproduction by underground stems; this can lead to the impression that variation is at a population rather than an individual level. Samuels [31] showed that “A” and “B” were fully interfertile, and thus classified them as subspecies.…”

Section: Resultsmentioning

confidence: 99%

“…Crossability of S. campylacanthum with other members of the group has proved difficult [40] and one-way pre-zygotic barriers have been suggested as the reason for this failure of fruit set in crosses with S. incanum and S. lichtensteinii [31]. It is possible that some of these difficulties could be due to ploidy differences within S. campylacanthum .…”

Section: Resultsmentioning

confidence: 99%

“…Eggplant taxonomy, evolution and biogeography were studied intensively by the late Richard Lester and his colleagues [29], [30], [31], [32]. The accessions they used for these studies were assembled by Lester and are now held in the germplasm collections of Radboud University in Nijmegen, The Netherlands (http://www.ru.nl/bgard/about_solanaceae/ru_solanaceae/) and at INRA in Avignon, France (http://w3.avignon.inra.fr/gafl/fr); these seventy accessions (and various subsets of them) were greenhouse grown and plants were not observed in the field in their native habitats.…”

Section: Introductionmentioning

confidence: 99%

“…Their work culminated in a classification for the group that recognised two species, each of which had a number of informal forms or groups [23], [29]; see Table 1 column 1. These “taxa” have been used to investigate crossing relationships [31] and are used in the EGGNET (EGGplant genetic resources NETwork) scheme for recording eggplant germplasm collections (see http://www.bgard.science.ru.nl/eggnet/eggnet01.html). The EGGNET descriptors and germplasm database tools are extensively used by germplasm curators and breeders [19].…”

Section: Introductionmentioning

confidence: 99%

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Wild Relatives of the Eggplant (Solanum melongena L.: Solanaceae): New Understanding of Species Names in a Complex Group

2013

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BackgroundThe common or brinjal eggplant (Solanum melongena L.) belongs to the Leptostemonum Clade (the “spiny” solanums) of the species-rich genus Solanum (Solanaceae). Unlike most of the genus, the eggplant and its relatives are from the Old World; most eggplant wild relatives are from Africa. An informal system for naming eggplant wild relatives largely based on crossing and other biosystematics data has been in use for approximately a decade. This system recognises several forms of two broadly conceived species, S. incanum L. and S. melongena. Recent morphological and molecular work has shown that species-level differences exist between these entities, and a new species-level nomenclature has been identified as necessary for plant breeders and for the maintenance of accurately named germplasm.Methodology/Principal FindingsWe examined herbarium specimens from throughout the wild species ranges as part of a larger revision of the spiny solanums of Africa. Based on these morphological and molecular studies, we delimited species in the group to which the common eggplant belongs and constructed identification keys for the group. We also examined the monophyly of the group considered as the eggplant relatives by previous authors.Conclusions/SignificanceWe recognise ten species in this group: S. aureitomentosum Bitter, S. campylacanthum A.Rich., S. cerasiferum Dunal, S. incanum L., S. insanum L., S. lichtensteinii Willd., S. linnaeanum Hepper & P.-M.L.Jaeger, S. melongena L., S. rigidum Lam. and S. umtuma Voronts. & S.Knapp. We review the history of naming and provide keys and character lists for all species. Ploidy level differences have not been investigated in the eggplant wild relatives; we identify this as a priority for improvement of crop wild relative use in breeding. The application of species-level names to these entities will help focus new collecting efforts for brinjal eggplant improvement and help facilitate information exchange.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Wild Relatives of the Eggplant (Solanum melongena L.: Solanaceae): New Understanding of Species Names in a Complex Group

2013

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Eggplant (Solanum melongena L.): Taxonomy and Relationships

Knapp

Aubriot

Prohens

2019

Compendium of Plant Genomes

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Solanum insanum L. (subgenus Leptostemonum Bitter, Solanaceae), the neglected wild progenitor of eggplant (S. melongena L.): a review of taxonomy, characteristics and uses aimed at its enhancement for improved eggplant breeding

Ranil

Prohens

Aubriot

et al. 2016

Genet Resour Crop Evol

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Solanum insanum L. (Solanaceaeae) is the wild progenitor of common eggplant (S. melongena L.) and is naturally distributed in south and southeast Asia, Madagascar and Mauritius. Despite interest in its potential for eggplant breeding it has not been studied extensively. Solanum insanum has been subjected to various taxonomic treatments, with several discussions and arguments on its delimitation as a species, due to its close similarities with the cultivated S. melongena and the wild species S. incanum L. from the Middle East and northern Africa. Solanum insanum has long been used in a variety of medicinal and culinary preparations across many different Asian ethnolinguistic groups. Limited studies carried out on its chemical composition and pharmacognostical properties coupled with ethnobotanic studies reveal that S. insanum has potential for eggplant improvement with respect to phytochemical properties of interest for human health. Further study of morphological and genetic diversity in S. insanum is essential to promote its utilization in eggplant breeding, in light of its potential to hybridize with cultivated eggplant successfully. Here we compile and review the taxonomy, phytogeography, ecology and habitat characteristics, cytology, ethnobotany, breeding and phytochemical analysis of S. insanum. A comprehensive botanical description and illustrations for S. insanum are provided. A detailed comparison of S. insanum and its closely allied species, S. melongena and S. incanum is also made. The potential of S. insanum for crop improvement and future research priorities are discussed.

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Solanum incanum s.l. (Solanaceae): taxonomic relationships between S. incanum, S. campylacanthum, S. panduriforme and S. lichtensteinii

Cited by 12 publications

References 8 publications

Wild Relatives of the Eggplant (Solanum melongena L.: Solanaceae): New Understanding of Species Names in a Complex Group

Wild Relatives of the Eggplant (Solanum melongena L.: Solanaceae): New Understanding of Species Names in a Complex Group

Eggplant (Solanum melongena L.): Taxonomy and Relationships

Solanum insanum L. (subgenus Leptostemonum Bitter, Solanaceae), the neglected wild progenitor of eggplant (S. melongena L.): a review of taxonomy, characteristics and uses aimed at its enhancement for improved eggplant breeding

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