Genetic diversity among 70 “scarlet eggplant” (Solanum aethiopicum L.) entries from differentgeographical origins was assessed. Entries were firstly evaluated for the main morphologic traits andchlorogenic acid content. Standard statistics and multivariate analyses were utilized to assess thephenotypic diversity and grouping the entries. In addition, amplified fragment length polymorphism(AFLP) and simple sequence repeat (SSR) analyses were used to evaluate genetic relationships amongentries. Differences between entries are highly significant for all descriptors. Principal componentanalysis (PCA) revealed that the first three components accounted for 74% of the total variance.Morphologic traits were associated with the first two components, while the third one was moderatelycorrelated with the chlorogenic acid content. The observed similarity allowed to identify only three maingroupings. The clusters obtained did not show any relationships with geographic origins and/orbotanical groups. Matrices of genetic similarity from AFLP and SSR data were utilized in order to obtaina dendrogram. A large cluster included several entries from South America with limited rate of geneticvariation was observed. On the contrary, higher amount of variation was observed in the cluster withentries from Africa, in which are also present in the accessions collected in Italy. These entries appearedalways morphologically and genetically distinguishable from the others. These results providedadditional information for the conservation, improvement and legal protection of the ecotype ‘melanzanarossa di Rotonda’, cultivated in Italy.
|Titolo:||Genetic diversity and characterization of an Italian ecotype and a germplasm collection of African eggplant (Solanum aethiopicum L.)|
SUNSERI, Francesco (Corresponding)
|Data di pubblicazione:||2010|
|Appare nelle tipologie:||1.1 Articolo in rivista|