Hybridization Studies of Five Species of the Solanum Nigrum Complex Found in South Africa and two Cocktail Tomato Cultivars

Jacoby, A.; Labuschagne, Maryke

doi:10.1007/s10681-005-9078-z

Cited by 11 publications

(14 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Stone cells mostly absent (Australia, South Pacific and South America), but if present (North America, Mexico, Eurasia and Africa) 2–4(6) per berry, 2–4 larger ones >0.5 mm and two smaller ones <0.5 mm in diameter. Chromosome number: 2n =2x=24 (Tokunaga 1933 [as S. dillenii ]; Nakamura 1937 [as S. photeinocarpum ]; Stebbins and Paddock 1949 [as S. nodiflorum ]; Heiser 1955 under S. nodiflorum ; Baylis 1958 as S. nodiflorum ; Soria and Heiser 1961 [as S. nodiflorum ]; Heiser et al 1965 [as S. nodiflorum ]; Edmonds 1972, 1977, 1982, 1983, 1984a; Venkateswarlu and Rao 1972 [vouchers labelled as S. nigrum S14, S30, S31]; D’Arcy 1974a; Henderson 1974; Tandon 1974; Bhiravamurty 1975 [as S. nodiflorum ]; Randell and Symon 1976; Symon 1981; Ganapathi and Rao 1986a; Symon 1985; Schilling and Andersen 1990; Bukenya 1996; Jacoby and Labuschagne 2006; Moyetta et al 2013; Olet et al 2015). …”

Section: Species Descriptionsmentioning

confidence: 99%

“…Stone cells absent or occasionally 1–2 diminutive apical stone cells present. Chromosome number: 2n =2x=24 (Baylis 1958; Soria and Heiser 1961 [as S. gracile ]; Heiser et al 1965 [as S. gracile ]; Venkateswarlu and Rao 1972; Henderson 1974 [as S. gracilius ]; Randell and Symon 1976; Edmonds 1972, 1977, 1982, 1983; 1984a [as S. sublobatum ]; Moscone 1992; Jacoby and Labuschagne 2006; Moyetta et al 2013). …”

Section: Species Descriptionsmentioning

confidence: 99%

“…Jacoby and Labuschagne (2006) reported that crosses made between S. chenopodioides and S. retroflexum were much more successful than between S. americanum and S. retroflexum . This relationship was also confirmed by arbitrary-amplified dominant markers (Jacoby et al 2003; Poczai and Hyvönen 2011) and by whole genome DArT analysis by van der Walt et al (2008).…”

Section: Species Descriptionsmentioning

confidence: 99%

“…The species has not been included in any previous crossing and molecular studies that have focused on understanding the parental origin of the hexaploid species S. nigrum and S. scabrum (e.g. Edmonds 1977, 1979a; Ganapathi and Rao 1985, 1986b, 1986c, 1987a, 1987b; Jacoby et al 2003; Jacoby and Labuschagne 2006; van der Walt et al 2008; Poczai and Hyvönen 2011). It could represent one of the tetraploid parents of the hexaploids and should be included in further studies focused on understanding the origin of the polyploids.…”

Section: Species Descriptionsmentioning

confidence: 99%

“…Stone cells absent. Chromosome number: 2n =4x=48 (Henderson 1974; Randell and Symon 1976; Edmonds 1977, 1983; Symon 1981; Jacoby and Labuschagne 2006). …”

Section: Species Descriptionsmentioning

confidence: 99%

See 4 more Smart Citations

A revision of the Old World Black Nightshades (Morelloid clade of Solanum L., Solanaceae)

Särkinen¹,

Poczai²,

Barboza³

et al. 2018

126

View full text Add to dashboard Cite

The Morelloid clade, also known as the black nightshades or “Maurella” (Morella), is one of the 10 major clades within Solanum L. The pantropical clade consists of 75 currently recognised non-spiny herbaceous and suffrutescent species with simple or branched hairs with or without glandular tips, with a centre of distribution in the tropical Andes. A secondary centre of diversity is found in Africa, where a set of mainly polyploid taxa occur. A yet smaller set of species is found in Australasia and Europe, including Solanum nigrum L., the type of the genus Solanum. Due to the large number of published synonyms, combined with complex morphological variation, our understanding of species limits and diversity in the Morelloid clade has remained poor despite detailed morphological studies carried out in conjunction with breeding experiments. Here we provide the first taxonomic overview since the 19th century of the entire group in the Old World, including Africa, Asia, Australia, Europe and islands of the Pacific. Complete synonymy, morphological descriptions, distribution maps and common names and uses are provided for all 19 species occurring outside the Americas (i.e. Africa, Asia, Australia, Europe and islands of the Pacific). We treat 12 species native to the Old World, as well as 7 taxa that are putatively introduced and/or invasive in the region. The current knowledge of the origin of the polyploid species is summarised. A key to all of the species occurring in the Old World is provided, together with line drawings and colour figures to aid identification both in herbaria and in the field. Preliminary conservation assessments are provided for all species.

show abstract

Section: Species Descriptionsmentioning

confidence: 99%

Section: Species Descriptionsmentioning

confidence: 99%

Section: Species Descriptionsmentioning

confidence: 99%

Section: Species Descriptionsmentioning

confidence: 99%

“…Stone cells absent. Chromosome number: 2n =4x=48 (Henderson 1974; Randell and Symon 1976; Edmonds 1977, 1983; Symon 1981; Jacoby and Labuschagne 2006). …”

Section: Species Descriptionsmentioning

confidence: 99%

See 3 more Smart Citations

A revision of the Old World Black Nightshades (Morelloid clade of Solanum L., Solanaceae)

Särkinen¹,

Poczai²,

Barboza³

et al. 2018

126

View full text Add to dashboard Cite

show abstract

Use of AFLPs to detect hybrids that confuse species boundaries between the lesser known African taxa in Solanum Merolloids section (Solanaceae)

Manoko

2023

Genet Resour Crop Evol

View full text Add to dashboard Cite

This study was designed to assess whether or not existed interspeci c hybrids that confused the taxonomy of African section Solanum species. Hybridization is one of the factors that blur boundary between closely related species. It is an indication that there is semi-permeable boundary between them through which genes are owing across. In the African species of section Solanum it has been hypothesized that interspeci c hybridization is one of the factors complicates the delimitation of species though this claim has never been examined systematically. One group of taxa with complicated taxonomy is the lesser known Bitter species; Solanum tarderemotum and S. orulentum all described from Tanzania. Through history the two taxa have been considered separate species, different species mixed with hybrids and recently the boundary of S. tarderemotum has been expanded to also cover S.orulentum and materials that have been hypothesized to be hybrids. DNA was isolated from sixty-three individuals from 22 accessions and two AFLP primer combinations; EcoRI + AAC/MseI + CAC and EcoRI + ACC/MseI + CAT. Clustering were constructed using PAST software. Five clusters were generated, S. tarderemotum sensu stricto and S. orulentum sensu stricto, fell in different clusters sharing only 41% of their total number of polymorphic bands. The other three clusters were of intermediary forms but sharing larger number of polymorphic bands with S. tarderemotum and S. orulentum than 41%. This observation indicates that the intermediary forms are real hybrids and S. tarderemotum and S. orulentum are good separate species thus should not be fused between them and with their hybrids.

show abstract

On the origin of Solanum nigrum: can networks help?

Poczai

Hyvönen

2010

Mol Biol Rep

View full text Add to dashboard Cite

Black nightshades are a group of species best known for their 'poisonous' or noxious weedy reputation. It is not so well known that species of this group serve as emerging food source in many countries worldwide especially in the African continent. Despite the fact that the section has recently been studied extensively, taxonomy is still unsettled and debated because of inter- and intraspecific hybridization, phenotypic plasticity and polyploidization. In this study we analyze the genetic relationships among diploid, tetraploid and hexaploid species of sect. Solanum, which have possibly taken part in the formation of Solanum nigrum, utilizing multi-locus (SCoT, ISSR) markers combined with chloroplast trnL-F sequence data and morphological characters. We scored 51 morphological characters united with SCoT (171), ISSR (224) and trnL-F (1042), for simultaneous analysis of 49 terminals and 1488 characters. The topology of the tree is concordant with the results of the network analysis. In the phylogenetic networks, all the accessions of the diploid species shared a split with all of the polyploid species. This reflected a high portion of shared ISSR and SCoT bands between diploids and polyploids. In addition, a strong split divided the diploid species. The history of S. nigrum might be reticulate with hybrid speciation playing an important rule. Genetically differentiated diploids in few combinations have created a series of genetically distinct polyploid populations. The insufficient isolation that permitted further recombination between ancient polyploids and diploids have resulted in high level of genotypic and phenotypic polymorphism. This high level of novel genomic variability obviously enabled species to succeed in their new environment.

show abstract

Hybridization Studies of Five Species of the Solanum Nigrum Complex Found in South Africa and two Cocktail Tomato Cultivars

Cited by 11 publications

References 11 publications

A revision of the Old World Black Nightshades (Morelloid clade of Solanum L., Solanaceae)

A revision of the Old World Black Nightshades (Morelloid clade of Solanum L., Solanaceae)

Use of AFLPs to detect hybrids that confuse species boundaries between the lesser known African taxa in Solanum Merolloids section (Solanaceae)

On the origin of Solanum nigrum: can networks help?

Contact Info

Product

Resources

About