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Delayed Light Emission as a Means of Predicting Papaya Susceptibility to Fruit Fly Infestation


Papayas (Carica papaya L.) at seven stages of maturity were harvested in Hawaii and evaluated for differences in intensity of delayed light emission (DLE) and Hunter ‘b’ values. There was a high correlation (r = −0.92) between DLE intensity and Hunter ‘b’ values for freshly harvested papayas at seven stages of maturity. DLE has a high potential as a rapid screening technique for detecting papays that are ripe enough to be susceptible to fruit fly infestation.