Fig. 1
The drought-induced morphological responses in wheat seedlings. The wheat seeds of Xihan No. 2 and Longchun 23 were sown in glass plates containing expanded perlite in an environmentally controlled growth room with 25 ± 2 °C, 70 % relative humidity and 16 h photoperiod (300 μmol m−2 · s−1 light intensity). One-week-old seedlings were subjected to progressive drought stress up to 48 h. Then, the glass plates were re-watered for the recovery of dehydrated seedlings. The photographs of two wheat cultivars were taken from 0 h, dehydration treatments (18 h, 24 h and 48 h) and rehydration treatment (R24 h), respectively