Table 1.

Mean (n = 3, ± SD) leaf osmotic potential at full turgor (Ψ _s; MPa) and leaf water potential at turgor loss point (Ψ _tlp; MPa) of sunflower cv. Yellow Empress plants grown under either well-watered or water-limited conditions. Asterisks denote significant changes (Student’s t-test; **P < 0.01, *P < 0.05) between growth conditions within species.

	Sunflower cv. Yellow Empress
	Well-watered	Water-limited
Ψ s	−0.50 ± 0.02	−0.95 ± 0.09*
Ψ tlp	−0.71 ± 0.05	−1.04 ± 0.03**