The chloroplasts of WW plants looked like shuttles in a shape, with tightly stacked grana thylakoids. Fewer number of osmiophilic granules was observed in the chloroplasts (Fig. 3A). Water stress significantly changed the internal structure of the chloroplast. The number of the chloroplasts per cell profile was smaller (Table 2). The length of the chloroplasts decreased and the width increased (Table 2), the chloroplasts became round in a shape with a bigger damage in the membrane structure, the number of osmiophilic granules increased, and the lamellae arranged disorderly (Fig. 3A,B). The number of starch grains (per chloroplast) decreased significantly (Fig. 3A,B, Table 2). The cristae in mitochondria were disintegrated (Fig. 3C,D). The cell nuclei were smaller and the agglomerate nucleoli were bigger than those of