It
may also be argued that increased IEC of the fruit with the delayed
harvest (4–6 weeks after CM) in both years at Perth Hills and
Donnybrook (Fig. 9) promoted accumulation of anthocyanins and
red blush development. Earlier, a brief exposure of apple fruit to
ethylene has been reported to be sufficient to initiate red pigmentation
in the fruit skin, and increased concentrations of ethylene
with the passage of time may result in further improvement of
colour development in ‘Pink Lady’ apple fruit at harvest (Whale
and Singh, 2007). Previously, the increased levels of endogenous
ethylene improved red blush development and accumulation of
anthocyanins in ‘Red Delicious’, ‘Golden Delicious’, ‘Tsugaru’, ‘Senshu’
and ‘Fuji’ apples have been reported (Blankenship and Unrath,