Fig. 1From: Abscisic acid mediated proline biosynthesis and antioxidant ability in roots of two different rice genotypes under hypoxic stressGrowth traits (a), biomass (b), leaf SPAD values (c), photosynthesis (Pn, d) and root activity (e) of both rice cultivars in response to normoxic and hypoxic conditions after 14 d of cultivation. Nip and U502 represent the lowland japonica rice ‘Nipponbare’ and the upland japonica rice ‘Upland 502’, respectively (here and below). DW represents dry weight. Data are the mean ± SE of three independent experiments. Different letters indicate significant differences at P < 0.05 using the least significant difference (LSD) testBack to article page