Table 1: Growth parameters of barley plants (Hordeum vulgare L.) cultured 3 weeks on phosphate-sufficient (+P) or phosphate-deficient (-P) nutrient medium. Means ± SD.

Parameters 7 days 14 days 21 days
+P -P +P -P +P -P
Shoot Fresh Weight (g) 0.33 ± 0.05 0.24 ± 0.04* 0.71 ± 0.2 0.50 ± 0.09* 1.36 ± 0.16 0.74 ± 0.14*
Roots Fresh Weigth (g) 0.28 ± 0.06 0.18 ± 0.04* 0.44 ± 0.14 0.54 ± 0.08 0.87 ± 0.17 0.77 ± 0.15
Root/Shoot 0.85 0.75 0.62 1.08 0.64 1.04
Shoot Dry Weight (mg) 39 ± 6 31 ± 5* 87 ± 23 68 ± 12* 180 ± 21 103 ± 20*
Roots Dry Weigth (mg) 41 ± 13 21 ± 4* 31 ± 10 47 ± 7* 67 ± 12 69 ± 10
Shoot Height (cm) 20.8 ± 2.4 18.0 ± 1.8* 29.4 ± 3.9 27.2 ± 1.7 40.3 ± 3.8 34.5 ± 3.6*
Root Length (cm) 12.2 ± 1.5 15.2 ± 2.3* 28.8 ± 4.2 33.5 ± 3.4* 48 ± 5.4 52.1 ± 4.3
Root/Shoot 0.59 0.84 0.99 1.23 1.19 1.51
Mean Root Diameter (mm) 0.85 0.61 0.70 0.72 0.76 0.69

* Significantly different at 0.05