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抗白叶枯病水稻品种幼苗在自然光条件下生长良好，在弱光下心叶弯曲，没有展开；而感病品种幼苗生长正常，没有出现弯曲现象．在自然光、弱光条件下，幼苗经接种白叶枯病菌后，根线粒体ＡＴＰａｓｅ活力下降，叶线粒体ＡＴＰａｓｅ活力上升，抗、感品种之间呈有规律变化；在黑暗条件下，幼苗接种后，根、叶线粒体ＡＴＰａｓｅ活力上升，病／健比值大于１，抗病品种大于感病品种．以上结果表明，进行抗病性生理生化分析时要注意光照的影响
The seedlings of resistant rice cultivars to bacterial leaf blight grew well under natural light conditions, and the heart leaves did not develop under low light. However, the seedlings of susceptible cultivars grew normally with no bending phenomenon. Under natural light and low light conditions, the seedlings were infected with X. oryzae, the mitochondrial ATPase activity decreased, the leaf mitochondrial ATPase activity increased, anti-susceptible varieties showed a regular change; in dark conditions, seedlings inoculated, roots , Leaf mitochondrial ATPase activity increased, the disease / health ratio greater than 1, the disease-resistant varieties than susceptible varieties. The above results show that the physiological and biochemical analysis of disease resistance should pay attention to the impact of light