Leaf proline concentration in sugarcane propagules under water deficit.

Leaf proline concentration in sugarcane plants grown under well-watered conditions (W/W and D/W) or subjected to water deficit (W/D and D/D). The propagules were obtained from plants previously exposed to water deficit (D/W and D/D) or grown under well-watered conditions (W/W and W/D). Measurements were done during the water deficit (stress) and recovery (gray area) periods, as shown in Fig 1. Each histogram is the mean value + s.d. (n = 4). Different letters mean statistical differences among treatments (p<0.05).