High dose aerosol emitters of pheromone, “puffers”, have been used successfully for over 15 years for control of codling moth in pears, and more recently have emerged as the leading mating disruption strategy in walnuts. While their efficacy is well documented, the mechanisms by which they operate are still not properly understood. Understanding how this type of dispenser works may provide oppo...

We developed retrotransposon-based insertional polymorphism (RBIP) markers based on the long terminal repeat (LTR) sequences of copia-like retrotransposon Ppcrt4 and flanking genome sequences, which were derived from 454 sequencing data from Japanese pear (Pyrus pyrifolia) 'Hosui'. Out of 40 sequences including both LTR and flanking genome regions, we developed 22 RBIP markers and used them for...

Apple maggot, Rhagoletis pomonella (Walsh), is a quarantine pest of apples, Malus domestica Borkhausen, and pears, Pyrus communis L., shipped from much of the United States and Canada. As such, these fruits shipped from infested areas to uninfested areas must undergo a quarantine disinfestation treatment. The objective of this research was to develop irradiation quarantine treatments against ap...

The effect of ethylene on the quality of ‘Bartlett pears’ stored at either /1 or 2 8C was examined. Fruit from three different harvest dates were stored for 3 months in 0, 1, 5 or 10 ml l 1 ethylene. Quality attributes, including skin color, firmness, scald and internal browning, were assessed when the fruit were removed from storage and after 4 days ripening at 20 8C. All levels of ethylene in...

The aim of this study was to evaluate the glycemic index and peak incremental indices of six popular fruits in Taiwan, comparing healthy subjects (n = 20) and patients with Type 2 diabetes (n = 17). The six kinds of fruits tested were grapes, Asian pears, guavas, golden kiwifruit, lychees and bananas. Glycemic index values were tested according to the standard glycemic index testing protocol. T...

'Comice' is among the pear varieties most difficult to ripen after harvest. Ethylene, cold temperature, and intermediate (10 °C) temperature conditioning have been successfully used to stimulate the ability of 'Comice' pears to ripen. However, the sensory quality of pears stimulated to ripen by different conditioning treatments has not been evaluated. In this study, a descriptive sensory analys...