Genetic diversity and relationships in accessions from different cultivar groups and origins in the tree tomato (Solanum betaceum Cav.)

Acosta-Quezada, Pablo G.; Vilanova, Santiago; Martínez‐Laborde, Juan B.; Prohens, Jaime

doi:10.1007/s10681-012-0736-7

Cited by 18 publications

(15 citation statements)

References 43 publications

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“…As occurs with morphological and molecular diversity (Acosta-Quezada, Martínez-Laborde, & Prohens, 2011;Acosta-Quezada, Vilanova, Martínez-Laborde, & Prohens, 2012), we have found a wide diversity for composition traits within each of the cultivar groups. Also, differences have been observed among cultivar groups for some relevant composition traits.…”

Section: Cajanumense)supporting

confidence: 64%

“…Acosta-Quezada, Martínez-Laborde, & Prohens (2011) differentiated five cultivar groups based on fruit colour and shape: orange, orange pointed, red, red conical and purple, and found considerable morphological diversity within each of the cultivar groups. The low differentiation among cultivar groups from the morphological point of view was confirmed with molecular data (Acosta-Quezada, Vilanova, Martínez-Laborde, & Prohens, 2012). As a result of these studies, strategies for the conservation of germplasm, as well as for the breeding and development of new cultivars, were proposed.…”

Section: Introductionmentioning

confidence: 59%

“…The cultivated accessions belonged to five cultivar groups as defined by Acosta-Quezada, Martínez-Laborde, & Prohens (2011): orange, orange pointed, red, red conical, and purple (Table 1). Most of these accessions were previously morphologically and molecularly characterized (Acosta-Quezada, Martínez-Laborde, & Prohens, 2011;Acosta-Quezada, Vilanova, Martínez-Laborde, & Prohens, 2012). Plant materials used were provided by the germplasm banks of the Universitat Politècnica de València (UPV; Spain) and the Universidad Técnica Particular de Loja (UTPL; Ecuador).…”

Section: Plant Materials and Cultivation Conditionsmentioning

confidence: 99%

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Diversity for chemical composition in a collection of different varietal types of tree tomato (Solanum betaceum Cav.), an Andean exotic fruit

et al. 2015

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We evaluated 23 tree tomato (Solanum betaceum) accessions from five cultivar groups 24 and one wild relative (S. cajanumense) for 26 composition traits. For all traits we found 25 highly significant differences (P<0.001) among the materials studied. The high diversity 26 found within S. betaceum for composition traits was matched by a high diversity within 27 each of the cultivar groups. We found that sucrose and citric acid were the most 28 important soluble sugar and organic acid, respectively, in tree tomato. Fruit in the 29 anthocyanin pigmented (purple) group had a carotenoid content similar to that in the 30 yellow-orange cultivar groups. Total phenolic content was significantly correlated 31 (r=0.8607) with antioxidant activity. Analyses of mineral content showed that tree 32 tomato is a good source of K, Mg, and Cu. Multivariate principal components analysis 33 (PCA) confirmed that an important diversity exists within each cultivar group. The 34 results we have obtained indicate that the high diversity found within the tree tomato 35 could be exploited for selection and breeding for developing the tree tomato as a 36 commercial crop. 37 38

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Section: Cajanumense)supporting

confidence: 64%

Section: Introductionmentioning

confidence: 59%

Section: Plant Materials and Cultivation Conditionsmentioning

confidence: 99%

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Diversity for chemical composition in a collection of different varietal types of tree tomato (Solanum betaceum Cav.), an Andean exotic fruit

et al. 2015

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“…Using a combination of morphological traits and molecular markers has been shown to lead to more reliable conclusions in assessments of genetic diversity (Khadivi-Khub et al, 2008;Nikoumanesh et al, 2011;Acosta-Quezada et al, 2012). According to the morphological results presented in the current study, leaf variation is crucial for distinguishing wild tomatoes from cultivated tomatoes as a result of i) most of the wild tomatoes possess specific leaf characteristics; ii) the results of PCA showed leaf traits to be the major contributors in the first component.…”

Section: Discussionmentioning

confidence: 99%

Genetic diversity of cultivated and wild tomatoes revealed by morphological traits and SSR markers

Zhou

Cao

et al. 2015

Genet. Mol. Res.

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ABSTRACT. In the current study, morphological traits and molecular markers were used to assess the genetic diversity of 29 cultivated tomatoes, 14 wild tomatoes and seven introgression lines. The three components of the principal component analysis (PCA) explained 78.54% of the total morphological variation in the 50 tomato genotypes assessed. Based on these morphological traits, a three-dimensional PCA plot separated the 50 genotypes into distinct groups, and a dendrogram divided them into six clusters. Fifteen polymorphic genomic simplesequence repeat (genomic-SSR) and 13 polymorphic expressed sequence tag-derived SSR (EST-SSR) markers amplified 1115 and 780 clear fragments, respectively. Genomic-SSRs detected a total of 64 alleles, with a mean of 4 alleles per primer, while EST-SSRs detected 52 alleles, with a mean of 4 alleles per primer. The polymorphism information content was slightly higher in genomic-SSRs (0.49) than in EST-SSRs (0.45). The mean similarity coefficient among the wild tomatoes was lower than the mean similarity coefficient among the cultivated tomatoes. The dendrogram based on genetic distance 13869 Genetic diversity analysis of cultivated and wild tomatoes ©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 14 (4): 13868-13879 (2015) divided the 50 tomato genotypes into eight clusters. The Mantel test between genomic-SSR and EST-SSR matrices revealed a good correlation, whereas the morphological matrices and the molecular matrices were weakly correlated. We confirm the applicability of EST-SSRs in analyzing genetic diversity among cultivated and wild tomatoes. High variability of the 50 tomato genotypes was observed at the morphological and molecular level, indicating valuable tomato germplasm, especially in the wild tomatoes, which could be used for further genetic studies.

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“…Cypromandra betacea , which is indigenous to the Andes in Bolivia, Chile, Ecuador, Argentina and Peru, has been virtually globalized and can be seen growing in most tropical and subtropical parts of Africa and Asia. Cultivar groups are recognized by different morphological characteristics and named after the fruit colour and shape (Acosta‐Quezada et al ., ). The species is mostly known from cultivation, but was apparently found in the wild in southern Bolivia and northwestern Argentina and it is thought to have diverged from wild relatives relatively recently (Bohs, ).…”

Section: Introductionmentioning

confidence: 97%

Identification of an A2 population of Phythophthora andina attacking tree tomato in Peru indicates a risk of sexual reproduction in this pathosystem

et al. 2016

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Tree tomato, Solanum betaceum, is an Andean fruit crop previously shown to be attacked by Phytophthora andina in Ecuador and Colombia. Blight-like symptoms were discovered on tree tomato plants in the central highlands of Peru in 2003 and shown to be caused by P. andina. Isolates of P. andina, collected from three different plantations in Peru over a 6-year time span (2003)(2004)(2005)(2006)(2007)(2008), were compared genetically with P. andina isolates from Colombia and Ecuador to test whether the pathogen population is geographically structured in the Andes. Restriction fragment length polymorphism (RFLP), mitochondrial DNA and simple sequence repeat (SSR) genetic markers, and mating type behaviour indicated that the Peruvian P. andina population from tree tomato is genetically distinct from populations infecting tree tomato in Colombia (CO-1) and Ecuador (EC-3, Ia, A1), but is more similar to the population infecting solanaceous hosts of the Anarrhichomenum complex (EC-2, Ic, A2). Such geographic substructuring within this pathogen species could result from spatial isolation. Most strikingly, in contrast to the Ecuadorian and Colombian P. andina isolates from tree tomato, the Peruvian isolates have the A2 mating type. The presence of both mating types in the Andean population of P. andina attacking tree tomato indicates a risk of sexual reproduction and the presence of long-lasting oospores in this pathosystem.

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Genetic diversity and relationships in accessions from different cultivar groups and origins in the tree tomato (Solanum betaceum Cav.)

Cited by 18 publications

References 43 publications

Diversity for chemical composition in a collection of different varietal types of tree tomato (Solanum betaceum Cav.), an Andean exotic fruit

Diversity for chemical composition in a collection of different varietal types of tree tomato (Solanum betaceum Cav.), an Andean exotic fruit

Genetic diversity of cultivated and wild tomatoes revealed by morphological traits and SSR markers

Identification of an A2 population of Phythophthora andina attacking tree tomato in Peru indicates a risk of sexual reproduction in this pathosystem

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