Fig. 1
Growth 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 atP < 0.05 using the least significant difference (LSD) test