Agriculture Reference
In-Depth Information
Fig. 4.46.
Seasonal changes in bulb development, dormancy, water status and
abscisic acid (ABA) content in the bulbs of
Allium x wakegi
. The extent of bulb
dormancy was taken as the number of days to sprouting and of bulb development by
the bulbing ratio (index). The bars represent standard errors based on 16, 10, 4 and 3
replicates, respectively, for the four variables listed. FW, fresh weight (from Yamazaki
et al
., 1995. Courtesy of
Journal of the Japanese Society for Horticultural Science
).
new bulbs root rapidly and internal ABA concentrations rapidly diminish.
Sprouting is also less sensitive to suppression by externally applied ABA than
cv. 'Kiharabansei no.1' (Yamazaki
et al.
, 1999b). Cultivar differences in
dormancy appear to parallel the extent to which ABA suppresses their bulb
sprouting.
