THE DEGREENING OF FALLGLO TANGERINE

'Fallglo' (Bower citrus hybrid [Citrus reticulata Bianco x (C. reticul ata Bianco x C. paradisi Macf.)] x 'Temple' [C. reticulata Bianco x C. sinensis L.] is an early season tangerine that is reportedly hypersen sitive to ethytene exposure during degreening. The effects of ethylene exposure time, waxing, and storage temperature on 'Fallglo' color wer e examined to assess degreening strategies. Exposure to 5 mu L . L-1 e thylene for 24 or 48 hours hastened degreening, and internal ethylene levels increased following the time periods of ethylene exposure. Frui t not exposed to ethylene, or exposed for shorter periods (2 or 6 hour s), degreened slowly during storage at 15.5 degrees C and internal eth ylene levels remained low. Low-temperature storage (4.5 degrees C) or waxing hindered degreening after ethylene exposure but decreased water loss. Degreening after ethylene exposure was faster for fruit stored at 15.5 than 26.5 degrees C.