Table 2.

Monitored stress: experimental system on propagation plugs

At time 0, propagation plug saturation was 100% (SMWC = Substrate maximum water content)
Propagation plug saturation	60% Control	30% Mild water deficit	20% Severe water deficit
Averaged determination	All the plants were watered daily to reach 60% SMWC with a volume based on the average weight of a subset of propagation plugs	All the plants were watered daily to reach 30% SMWC with a volume based on the average weight of a subset of propagation plugs	Not done (threshold effect)
Individual determination	Each plant was watered daily to reach 60% SMWC based on the actual weight of the propagation plug	Each plant was watered daily to reach 30% SMWC based on the actual weight of the propagation plug	Each plant was watered daily to reach 20% SMWC based on the actual weight of the propagation plug
Salt stress: individual determination	Each plant was watered daily to reach 60% SMWC based on the actual weight of the propagation plug. Once at 60%, salt stress was applied with 0.5× a nutritive solution supplemented with 150 mM NaCl.	Not done (combined water deficit and salt stress not applied)	Not done (combined water deficit and salt stress not applied)