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Nicoletto C.,University of Padua | Santagata S.,University of Padua | Tosini F.,Centro Sperimentale Ortofloricolo Po Of Tramontana | Sambo P.,University of Padua
CYTA - Journal of Food | Year: 2013

Artichoke is one of the most important crop cultivated in the Mediterranean area and especially in Italy. Among all the different artichoke types available on the market, two typical genotypes grown in the Veneto basin in northern Italy, Violetto di S. Erasmo(VE) and Violetto di Chioggia (VC), both unknown from a nutritional point of view, were characterized. All the results obtained were compared with those of Violetto di Toscana (VT) that can be considered a standard for the oval purple type. Violetto di S. Erasmo (VE) and VC showed higher antioxidant capacity than VT. Chlorogenic acid content was very high, especially in VE and VC. Caffeic acid was also detected, whereas p-coumaric acid, ferulic acid, and gallic acid were not found. Moreover, Veneto genotypes showed a high ascorbic acid content leading us to consider them suitable also for the processing industry and a rather good source of functional compounds and healthy properties.

Quartieri M.,University of Bologna | Marangoni B.,University of Bologna | Schiavon L.,Azienda Pilota e Dimostrativa Sasse Rami | Tagliavini M.,Free University of Bozen Bolzano | And 3 more authors.
Acta Horticulturae | Year: 2011

European pear (Pyrus communis L.) is in Italy predominantly grown on clonal quince (Cydonia oblonga Mill.) rootstocks. However, this grafting combination shows several problems including poor graft compatibility, susceptibility to lime-induced iron chlorosis and pear decline, which are normally not observed when P.communis is used as rootstock. Since 1979, the University of Bologna (Italy) has undertaken a breeding programme to obtain new clonal pear rootstocks and in 1996 two clones (Fox 11 and Fox 16) were released. Recently, the programme focused on clones with a marked size-controlling aptitude and high yield efficiency. In 2002 and 2004 two experimental trials were arranged to evaluate the performances of cultivars 'Abbè Fétel', 'Conference' and 'Bartlett' grafted on eight pear clones of Bologna University (A74, C19, C91, D46, D50, E82, E105 and Fox 9), Farold® 40 Daygon and quinces BA29, MC and Sydo®. Fox 9 showed a slightly higher vigor and yield performance compared to quince BA29, and good fruit quality. In addition, Fox 9 showed high environmental adaptibility, good suitability to be micropropagated and high graft compatibility with the tested cultivars. Based on these findings, in 2008 Fox 9 was released as a new rootstock for P.communis and the application for community plant variety rights (EU patent) was lodged. Among the other pear selections tested, D46 and D50 induced good yield but also the highest vigour, while C91 was interesting for the moderate growth.

Nicoletto C.,University of Padua | Tosini F.,Centro Sperimentale Ortofloricolo Po Of Tramontana | Sambo P.,University of Padua
Acta Agriculturae Scandinavica Section B: Soil and Plant Science | Year: 2013

In the last years, 'Cuore di Bue' tomato has been one of the most important types requested from the market because of its special flesh texture and flavour, which is very pleasing to the consumer. The present study aims to verify if rootstock affects some specific qualitative traits of this tomato fruits during ripening process. The main quality traits during ripening of tomato fruits of cultivar 'Profitto' ungrafted and grafted on 'Beaufort' and 'Big Power' rootstocks were determined. Results showed that different ripening stages and grafting combinations affected, sometimes strongly, tomato fruits' quality. Among phenolics, gallic, cinnamic and p-coumaric acids declined during ripening, whereas chlorogenic, caffeic and ferulic acids increased in the last ripening stages. The quality of tomato fruits was also influenced by grafting. As far as quality parameters (colour, °Brix, electrical conductivity, pH, titratable acidity) and sugar content are concerned, there were significant differences. Strong differences are attributable also to the contents of phenolic acids. In particular, ungrafted Profitto plants showed more p-coumaric and caffeic acid content than the other two grafted treatments. Profitto and Profitto×Beaufort showed more chlorogenic and cinnamic acid than Profitto×Big Power variety. The last one variety showed a completely different chlorogenic acid accumulation pattern and contained more gallic and ferulic acid than the other two. The nutritional value of grape tomatoes 'Cuore di Bue' considerably increased with ripening stage. Grafting has a significant effect on various biochemical and nutritional properties in tomato fruit. Many chemical compounds related to the antioxidants group have been involved in these changes showing a significant decrease in grafted fruits. Concerning other parameters such as pH, EC and Brix, the graft leads to very small changes. © 2013 Copyright Taylor and Francis Group, LLC.

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