Drought, in the changing climatic conditions of the world, is a major obstruction to rice production and productivity. Silicon has been recognized as a vital element advantageous in combating various environmental stresses in crops. Five genotypes of rice (Oryza sativa L.) were selected to investigate the regulation of superoxide dismutase (SOD), proline and malondialdehyde (MDA) under normal and water-deficit conditions when exogenously supplemented with silicon. A field study for two successive years was laid out with four treatments viz. Control (T1), Si fertilized (T2), Si + Drought stress (T3) and Drought stress (T4). Results displayed that silicon-supplemented rice plants under water-deficit conditions had a significantly enhanced SOD activity increasing from 34.85 U/g fresh wt/min in case of drought-inflicted plants to 61.08 U/g fresh wt/min for Si-supplemented drought-inflicted plants. The proline and MDA content was reduced by 42% and 40% in the case of Si-added drought-stressed plants. The pollen study also unveiled the beneficial effect of silicon to cope with drought stress, while shrinkage of pollens was observed in drought conditions.

在世界不断变化的气候条件下，干旱是水稻生产和生产力的主要障碍。硅已被公认为有利于对抗作物中的各种环境压力的重要元素。水稻的五种基因型（Oryza sativa选择 L.) 研究在正常和缺水条件下外源补充硅时超氧化物歧化酶 (SOD)、脯氨酸和丙二醛 (MDA) 的调节。连续两年的实地研究被安排了四种治疗方法，即。对照 (T1)、Si 施肥 (T2)、Si + 干旱胁迫 (T3) 和干旱胁迫 (T4)。结果表明，缺水条件下的补充硅水稻植株的 SOD 活性显着增强，从干旱植物的 34.85 U/g 新鲜 wt/min 增加到 Si 补充干旱的 61.08 U/g 新鲜 wt/min - 受害植物。在添加Si的干旱胁迫植物的情况下，脯氨酸和MDA含量分别降低了42%和40%。花粉研究还揭示了硅应对干旱胁迫的有益作用，