Improvements in fruit color increase the market value of fruit,
and AVG generally delays ripening and undesirable color formation
on fruit (Greene and Schupp, 2004: Rath and Prentice, 2004). A
distinctive effect of AVG treatments on ripening and color set of
plum was not observed in this study. Only retarding impacts of
AVG treatments on chroma values were observed. Steffens et al.
(2011) reported that color formation of ‘Laetitia’ plums was linearly
retarded with increasing doses of AVG. However, Greene (2005)
indicated that AVG retards ripening and consequently prolongs the
life of fruit on the tree. In this case, fruit are exposed to sunlightfor a
longer time and color formation is indirectly influenced by day and
night temperature differences. Lozano et al. (2009) determined the
L*, chroma and hue angle values for ‘Black Amber’ fruit as 22.08,
3.05 and 7.77, respectively, and Khan and Singh (2010) observed
that color values in ‘Black Amber’ plums did not change during the
ripening period. The findings ofthe current study are mostly similar
to those of the above researchers