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Thai) 2:
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This lack of red colouration or consumer appeal was caused by decreased PAR transmission essential for fruit colouration ( (Arakawa et al., 1985),especially in the case of greeneblack and redeblack hailnets containing two black fibres in their structure (Fig. 2).Vice versa, fruits from apple trees under the coloured hailnets
developed a greener ground colour with lower a and higher
b values as well as larger hue values (‘Fuji’ 86 to 99 hue, ‘Pinova’
78 to 92 hue, greeneyellow) than unprotected fruit with 59hue
and 61hue for the same reason as the red top colour. In terms of
fruit quality, the coloured hailnets improved green (ground) colour,
but hampered some of the red (top) colour of the apple fruit.
Overall, (red) top and (green) ground colour of the apple fruit and hence consumer appeal were not only influenced by the hailnet
colour, but also by the number of black or white fibres in the
respective coloured hailnet with increasing numbers of black fibres
reducing the light. This is in line with fruit quality results from
apple under white or black hailnets of e.g.
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