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International Journal of Agronomy
Volume 2013, Article ID 242461, 9 pages
Research Article

Nectarine Fruit Ripening and Quality Assessed Using the Index of Absorbance Difference ( )

1Department of Agricultural Sciences, 46 Via Fanin, 40127 Bologna, Italy
2Department of Primary Industries, Knoxfield Centre, Private Bag 15, 621 Burwood Highway, Ferntree Gully 3156, Australia

Received 30 January 2013; Accepted 3 May 2013

Academic Editor: Anish Malladi

Copyright © 2013 E. Bonora et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Consistency of fruit quality is extremely important in horticulture. Fruit growth and quality in nectarine are affected by fruit position in the canopy, related to the tree shape. The “open shaped” training systems, such as Tatura Trellis, improve fruit growth and quality. The Index of Absorbance Difference ( ) is a new marker that characterizes climacteric fruit during ripening. A study on fruit ripening was performed by using the on nectarine to monitor fruit maturity stages of two cultivars trained as Tatura Trellis in Victoria, Australia. Fruit of cv “Summer Flare 34” (“SF34”) grown in different positions on the tree showed high ripening homogeneity. Fruit harvested at a similar ripening stage showed fruit firmness and soluble solid content homogeneity. Fruits from hand-thinned variety “Summer Flare 26” (“SF26”) were larger in size, had advanced ripening, and showed greater homogeneity. For “SF26”, a weak correlation between and SSC was observed. The experiment showed that the Tatura Trellis training system is characterized by high homogeneity of nectarine fruit when coupled with a proper management of fruit density. It also confirmed that the could be used as new nondestructive maturity index for nectarine fruit quality assessment in the field.