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The fresh biomass of shoots and roots, sum of length of all primary roots and lateral roots number of barley plants grown for 2.5 days under different illumination (165 and 45 µmol m–2 s–1 PAR (the Table shows means ± s.e., n = 40). The means for the two options were significantly different at p ≤ 0.05 (t-test).
| Illumination, µmol m−2 s−1 | Shoot Mass, mg | Root Mass, mg | Root Length, cm | Number of Lateral Roots |
|---|---|---|---|---|
| 165 | 176 ± 3 | 80 ± 3 | 47.5 ± 1.9 | 28.0 ± 3.0 |
| 45 | 150 ± 4 | 56 ± 3 | 30.7 ± 1.7 | 2.8 ± 0.7 |
