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Wei Hu, Ju-Hua Liu, Xiao-Ying Yang, Jian-Bin Zhang, Cai-Hong Jia, Mei-Ying Li, Bi-Yu Xu and Zhi-Qiang Jin

-aminocyclopropane-1-carboxylate (ACC) synthase (ACS: EC 4.4.1.14) gene expression ( Kathiresan et al., 1997 ). However, the function of GAD in climacteric ethylene biosynthesis and postharvest fruit ripening is unclear. The banana ( Musa acuminata L. AAA group cv

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Marisa M. Wall, Kate A. Nishijima, Lisa M. Keith and Mike A. Nagao

on Hawaii Island before export via air shipment. Consumer acceptance of this high value crop requires that fruit arrive at their final destination in excellent condition with minimal defects. However, pericarp darkening and postharvest diseases

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Anna Marín, Anne Plotto, Lorena Atarés and Amparo Chiralt

infection, but also to inadequate postharvest handling and storage where small wounds on fruit may favor the development of fungal decay ( Janisiewicz and Korsten, 2002 ; Sharma et al., 2009 ; Spadaro and Gullino, 2004 ; Trias et al., 2008 ). Grapes are

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Meng Li, Huanhuan Zhi and Yu Dong

the storage period will improve the quality of fruit delivered to high-value export markets. Preharvest and postharvest applications of plant growth regulators have been proven to slow the deterioration of cherry quality ( Correia et al., 2017

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D. J. Makus and A. R. Gonzalez

Postharvest

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James W. Rushing, Wilton P. Cook and Anthony P. Keinath

Postharvest/Biotechnology

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Michelle L. Jones, Kenneth K. Cochran, Gary A. Anderson and David C. Ferree

Deciduous holly branches were visually rated over a period of 5 weeks to evaluate differences in display life between various cultivars of winterberry (Ilex verticillata) and japanese winterberry (I. serrata) x winterberry. Holly branches were naturally defoliated and the postharvest performance of the cut branches was therefore based on the quality and longevity of the fruit. Chemical treatments including floral preservative, floral preservative plus silver, and anti-transpirant were also evaluated. `Bonfire' and `Sunset' had the highest ratings for marketability based on the longevity and quality of their fruit. `Bonfire' and `Winter Red' had the highest fruit density per stem. Treatment with floral preservatives significantly increased the display life of holly branches. Preservative plus silver delayed deterioration later in the study, presumably by delaying the senescence of the fruit. Anti-transpirant treatment did not decrease solution uptake by the holly stems. Cold storage of dry branches at 0.00 ± 1.11 °C (32.0 ± 2.0 °F) did not significantly reduce branch display life if held for 23 days or less. Cut branches of all cultivars had a longer display life when stuck in sand and left outdoors in a lath house than when rated in vase solutions indoors. This study indicates that deciduous holly branches provide an attractive alternative cut branch for both interior and outdoor holiday displays.

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Zoltán Pék, Lajos Helyes and Andrea Lugasi

did not necessarily justify this generalization ( Arias et al., 2000 ). The aim of the present study was to compare the process of on-vine or postharvest ripening of tomatoes with regard to the effect of storage temperature on fruit color evolution and

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W.R. Miller, E.J. Mitcham, R.E. McDonald and J.R. King

Postharvest quality of `Climax' rabbiteye blueberries (Vaccinium ashei Read) was evaluated after exposure to dosages of 0, 0.75, 1.5, 2.25, or 3.0 kGy gamma irradiation (0.118 kGy·min-1) and after subsequent storage. Irradiation did not affect weight loss, but irradiated berries were softer than nontreated berries. There was also a trend toward increased decay as dose increased. Irradiation had no effect on powdery bloom or surface color; total soluble solids concentration, acidity, and pH were affected slightly. Flavor preference was highest for nonirradiated berries and generally declined as dosage increased. Irradiation at 2.25 and 3.0 kGy resulted in increased levels of xylosyl residues in cell walls, and xylosyl residues were the most abundant cell-wall neutral sugar detected in blueberries. There was no evidence of cell wall pectin loss in irradiated berries. Irradiation at 21.5 kGy lowered the quality of fresh-market `Climax' blueberries.

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E.M. Kupferman and Peter Sanderson

118 ORAL SESSION 36 (Abstr. 269–276) Postharvest Physiology/Fruits