Table 1. Plant height, the maximum leave areas, root length, biomass and relative growth rate (RGR) of Sorghum bicolor (L.) Moench seedlings under various salt and alkali stresses.

Treatment	Salinity	Plant height	Leaf area	Root length	Biomass	RGR(%)
	(mmol/)	(cm)	(cm2)	(cm)	(mg)
CK	0	38.89±0.90a	46.03±1.41a	13.78±0.95a	374.10±21.75a	13.37±0.42a
A1	100	46.64±2.44b	60.16±7.54b	14.18±0.46a	379.20±19.17a	13.48±0.36a
A2	200	38.04±2.97ac	47.25±9.00ac	15.51±1.02ab	371.60±45.88a	13.25±0.84a
A3	300	31.45±1.09de	32.37±3.00d	14.74±0.37ac	246.40±11.82bc	10.40±0.35bd
B1	100	33.72±2.68ad	40.68±2.84ade	18.04±0.28b	340.60±11.71ad	12.72±0.25ac
B2	200	32.90±1.39cdf	34.10±2.90ae	16.99±1.22bce	406.20±7.75a	13.98±0.14a
B3	300	26.74±1.18egh	26.89±2.53f	13.28±0.97ad	215.30±19.68b	9.39±0.69b
C1	100	28.11±1.31fg	31.31±0.2672dg	14.97±0.44ade	293.30±41.75cd	11.52±0.98cd
C2	200	24.33±0.62gh	19.44±1.71h	15.00±0.54ade	204.60±4.16b	9.08±0.14b
C3	300	21.91±1.19h	9.91±1.46i	9.76±1.44f	128.30±4.50e	5.75±0.25e

Note: Values represent means±S.E. Values at each treatment group followed by different letters are significantly different (P < 0.05).