title: Diversity among mandarin varieties and natural sub-groups in aroma volatiles compositions.
abstract: BACKGROUND
  Mandarins constitute a large, diverse and important group within the Citrus family. Here, we analysed the aroma volatiles compositions of 13 mandarin varieties belonging to seven genetically different natural sub-groups that included common mandarin (C. reticulata Blanco), clementine (C. clementina Hort. ex. Tan), satsuma (C. unshiu Marcovitch), Mediterranean mandarin (C. deliciosa Tenore), King mandarin (C. nobilis Loureiro), and mandarin hybrids, such as tangor (C. reticulata × C. sinensis) and tangelo (C. reticulata × C. paradisi).
  
  
  RESULTS
  We found that mandarin varieties among tangors ('Temple', 'Ortanique'), tangelos ('Orlando', 'Minneola') and King ('King') had more volatiles, at higher levels, and were richer in sesquiterpene and ester volatiles, than other varieties belonging to the sub-groups common mandarin ('Ora', 'Ponkan'), clementine ('Oroval', 'Caffin'), satsuma ('Okitsu', 'Owari') and Mediterranean mandarin ('Avana', 'Yusuf Efendi'). Hierarchical clustering and principal component analysis accurately differentiated between mandarin varieties and natural sub-groups according to their aroma-volatile profiles.
  
  
  CONCLUSIONS
  Although we found wide differences in aroma-volatiles compositions among varieties belonging to different natural sub-groups, we detected only minor differences among varieties within any natural sub-group. These findings suggest that selecting appropriate parents would enable manipulation of aroma-volatile compositions in future mandarin breeding programmes.
authors.affiliation: Department of Postharvest Science of Fresh Produce, ARO, the Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel.|Faculty of Agricultural, Food and Environmental Quality Sciences, Hebrew University of Jerusalem, Rehovot 76100, Israel.
authors.forename: Livnat
authors.initials: L
authors.lastname: Goldenberg
authors.affiliation: Department of Fruit Tree Crops, ARO, the Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel.
authors.forename: Yossi
authors.initials: Y
authors.lastname: Yaniv
authors.affiliation: Department of Fruit Tree Crops, ARO, the Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel.
authors.forename: Adi
authors.initials: A
authors.lastname: Doron-Faigenboim
authors.affiliation: Department of Fruit Tree Crops, ARO, the Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel.
authors.forename: Nir
authors.initials: N
authors.lastname: Carmi
authors.affiliation: Department of Postharvest Science of Fresh Produce, ARO, the Volcani Center, P.O. Box 6, Bet Dagan 50250, Israel.
authors.forename: Ron
authors.initials: R
authors.lastname: Porat
mesh_terms: D002957:Citrus / Q000737:chemistry* / Q000145:classification; D005638:Fruit / Q000737:chemistry*; D006801:Humans; D009812:Odorants / Q000032:analysis*; D000069600:Plant Breeding; D013045:Species Specificity; D055549:Volatile Organic Compounds / Q000032:analysis*
chemical_list: D055549:Volatile Organic Compounds
keywords: aroma; flavour; mandarin; volatiles