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Title: Evaluation of apple fruit aroma character from Geneva Malus core collection

Author
item SUGIMOTO, NOBUKO - MICHIGAN STATE UNIVERSITY
item Forsline, Philip
item BEAUDRY, RANDY - MICHIGAN STATE UNIVERSITY

Submitted to: Proceedings American Society of Horticultural Sciences
Publication Type: Proceedings
Publication Acceptance Date: 6/10/2007
Publication Date: 9/15/2007
Citation: Sugimoto, N., Forsline, P.L., Beaudry, R. 2007. Evaluation of apple fruit aroma character from Geneva Malus core collection. HortScience 42:869.

Interpretive Summary:

Technical Abstract: Mature apple fruit from 184 lines (41 species) from the Malus core and Kazakhstan collections of the germplasm repository at the New York Agricultural Experiment Station in Geneva, NY were evaluated. Volatile compounds, taste, weight, internal ethylene concentration, starch index, firmness, and Brix were measured when the fruit were ripening. Fruit mass of individual lines ranged from 0.3 g to 342 g. Small-fruited lines produced no or few detectable esters. Medium-sized fruited lines tended to have unusual flavors and unique scents. Large fruit had more diversity in and a higher production of esters and alcohols, but did not possess unusual or peculiar aromas. Some species produced mostly straight-chain esters while others contained abundant branched-chain esters in addition to straight-chain esters. Unsaturated esters and ester precursors were detected predominantly on small-fruited lines. Esters with even-numbered carbon chain-lengths for the alcohol and acid portion were more common. The most frequent esters detected were C4, C6, and 2-methylbutanoate esters. The emission of volatiles and elevated internal ethylene concentration did not always correlate with a high starch index. Commercial apples were found to be balanced with sweetness, acidity, floral, and fruity.