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以对白背飞虱具有不同抗性水平的水稻品种 (组合 )为材料 ,研究了水稻在白背飞虱为害后稻株体内的生理变化。结果表明 ,稻株受害后 ,感虫品种 (TN1和汕优 6 3)光合作用速率和叶绿素含量下降比抗虫品种 (N2 2 )明显 ;感虫品种超氧化物歧化酶 (SOD)活性增加 ,过氧化物酶 (POD)和过氧化氢酶 (CAT)活性下降 ,而抗虫品种 POD和 SOD均增加 ,CAT减少 ;感虫品种除丙氨酸含量下降外 ,其他氨基酸含量均上升 ,尤其是天门冬氨酸、苏氨酸、缬氨酸及蛋氨酸等含量增加很快 ,抗虫品种中天门冬氨酸、缬氨酸等含量增加也很快 ,但苏氨酸、蛋氨酸、丙氨酸的含量显著下降
The rice varieties (combinations) with different resistance levels to Sogatella furcifera were used as materials to study the physiological changes of rice plants after they were damaged by Sogatella furciferans. The results showed that the photosynthesis rate and chlorophyll content of susceptible varieties (TN1 and Shanyou 63) were significantly lower than those of the resistant varieties (N2 2) after the rice plants were damaged. The activity of superoxide dismutase (SOD) Peroxidase (POD) and catalase (CAT) activity decreased, but the POD and SOD of insect-resistant cultivars increased and CAT decreased. The contents of other amino acids increased except the alanine content, especially Aspartic acid, threonine, valine and methionine increased rapidly, and the content of aspartic acid and valine in the insect-resistant varieties also increased rapidly, but the content of threonine, methionine and alanine Significantly decreased