Table 1.
Weather information during the growing seasons of 2010 and 2011 for Champaign, Illinois.
Figure 1.
QR inducing activity of apical, basal and combined leaf tissue samples from two kale cultivars.
A: Images of harvested apical and basal leaf samples. B: QR activity of mixed extract of 1∶1 apical and basal leaf tissues. C: QR activity of apical leaf tissue. D: QR activity of basal leaf tissue. Student T-tests were conducted to determine significance at P≤0.05. NS and *indicate non-significance and significance at P≤0.05, respectively. Data are means ± SD (n = 3).
Table 2.
GS composition of different kale leaf tissue samples with or without MeJA treatment from two kale cultivars over two years.
Figure 2.
Effect of MeJA treatments on endogenous JA concentrations of apical and basal kale leaf tissue in two cultivars.
Data are means ± SD (n = 3). *indicates significance at P≤0.05.
Table 3.
Hydrolysis product composition of apical and basal leaf tissues with or without MeJA treatment from two kale cultivars over two years.
Table 4.
Correlation analysis between intact GS, GS hydrolysis products and QR inducing activity from apical and basal leaf tissue extracts from 250 µM MeJA treated two different kale cultivars over two years.
Figure 3.
QR inducing activity from kale leaf tissue samples sprayed with varying concentrations of MeJA (0, 50, 250, and 500 µM).
Different letters indicate significant differences among treatments based on Fisher’s LSD test at P≤0.05. A: QR activity, B: GS profiles, and C: hydrolysis product profiles.
Table 5.
GS concentrations from kale leaf tissue samples sprayed with varying concentrations of MeJA (0, 50, 250, and 500 µM).
Table 6.
GS hydrolysis product concentrations from kale leaf tissue samples sprayed with varying concentrations of MeJA (0, 50, 250, and 500 µM).
Table 7.
Correlation analysis between intact GS, GS hydrolysis product and QR activity from kale leaf tissue across two kale cultivars sprayed with varying concentrations of MeJA (0, 50, 250, and 500 µM).