Table 2.

Description of root and shoot biomasses, physiological traits, and root system architecture system features in a wheat core collection grown under two control and water deficit stress conditions.

Trait	Abb.	unit	Refs.
Root fresh weight	RFW	mg plant–1	[1]
Root dry weight	RDW	mg plant–1	[1]
Root tissue density	RTD	mg cm –3	[4]
Specific root length	SRL	m g–1 dry mass	[4]
Root diameter	RD	cm	[4]
Root branch number	RBN		[4]
Root surface area	RA	cm2	[4]
Total root surface area	TSA	cm2	[4]
Root volume	RV	cm3	[1]
Shoot fresh weight	SFW	mg plant–1	[1]
Shoot dry weight	SDW	mg plant–1	[4]
Shoot-to-root fresh weight ratio	SRF		[4]
Shoot-to-root dry weight ratio	SRD		[1]
Relative chlorophyll content	SPAD	SPAD value	[1]
Leaf temperature	LT	°C	[1]
Stomatal conductance	Gs	mmol m−2 s−1	[1]
Initial fluorescence	Fo		[1]
Maximum fluorescence	Fm		[1]
Maximum quantum yield of PSII	Fv/Fm		[1]
Maximum primary yield of photochemistry of PSII	Fv/Fo		[1]
Relative water content	RWC	%	[1]
Shoot fresh weight	SFW	mg plant–1	[1]
Shoot dry weight	SDW	mg plant–1	[1]