Seed C, N and S concentrations
Table 2 displays C, N and S seed concentrations. The seed C
concentration (%C) was impacted by T-modalities
(p<0.001 ) but no S effects were observed. The
T-modalities only had an effect under HS, with mod1 and T-control ranked
with the lowest (-7.4% from HS T-control) and highest values,
respectively. Similar to %C, the seed N concentration (%N) was only
affected by T-modalities (p<0.001 ). Under both S
conditions, extreme %N values were observed for mod1 and T-control,
which had the highest and the lowest rankings, respectively (+18.2 %
for HS mod1 compared to HS T-control, and +21.9% for LS mod1 compared
to LS T-control). The SES events induced intermediate values of %N
under both S supplies. These observations showed that the early mild
stress had a positive effect over the late heat peaks, which suggested
an alleviating effect. As expected, the seed S concentration (%S) was
significantly impacted by S supply (p<0.001 ), which was
mainly observed in T-control seeds and in mod3-seeds (decreases in
38.5% and 40%, respectively, under LS). While no significant
differences were observed among the T-modalities under HS, the %S in
mod1 was significantly higher than in T-control (37.5%) under LS.