Volatile Profile Comparison of USDA Sweet-Orange-Like Hybrids and Standard Sweet Oranges

Jinhe Bai, Elizabeth Baldwin, Ed Stover, Randy Driggers, Jack Hearn

Abstract


Volatiles of six hybrids (‘Ambersweet’ orange crossed with one of three different orange hybrids) were analyzed using gas chromatography–mass spectrometry (GC-MS) to compare the volatile profiles with ‘Hamlin’, the most widely grown early sweet orange in Florida, and ‘Ambersweet’. All hybrids are at least one-half sweet orange and varying amounts of additional tangerine, grapefruit, Poncirus trifoliata, and sour orange in their pedigrees. In total, 135 volatiles were detected from the eight hybrid lines/commercial cultivars over two harvests, and 20 components were detected in all samples. All the new lines are sweet-orange-like, early season hybrids in fruit size, color, and taste. This volatile analysis supports the classification of the hybrids as sweet orange.


Keywords


monoterpene, sesquiterpene, ester, aldehyde, alcohol

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Proc. Fla. State Hort. Soc.     ISSN 0886-7283