Table 7.

Influence of different phosphorus concentrations on ATP, SQDG, PG content and V-ATPase activity

Inbred line	Pi treatment	ATP (nmol*g-1 Fw)	SQDG (mol/%)	PG (mol/%)	V-ATPase (μM Pi mg-1 Pro.h)
Qi319-96	+P	395.22 ± 22.23a	9.25 ± 0.43a	8.22 ± 0.47a	8.36 ± 0.21a
	–P	134.53 ± 8.52b	13.45 ± 0.76b	6.12 ± 0.41b	12. 74 ± 0.32b
Qi319	+P	374.68 ± 17.45a	9.02 ± 0.24a	8.15 ± 0.55a	8.17 ± 0.11a
	–P	75.46 ± 4.47c	11.25 ± 0.88c	5.68 ± 0.33c	10.33 ± 0.23c

Three seedlings per bottle were cultured in phosphorus saturation solution (1000 μM KH₂PO₄) to the three-leaf stage, followed by low phosphate stress solution (5 μM KH₂PO₄) for an additional 25 days to the six–seven-leaf stage. Values represent the means of nine seedlings ± SD. Values with different letters within a row are significantly different (P < 0.05) by multiple comparison analysis