Oxidases and MDA Response Characteristics in
Poplar Yellow Seedling Leaves

LIU Yun-peng; XU Fu-yuan; ZHU Xing-jun; YAN Xiang-jin

By analyzing the contents of biochemical substances in soil and different parts and indexes of poplar yellow seedling leaves, the cause of yellow and its influence on various enzymes within yellow leaves was studied. The results showed that high pH value and low Mg content in soil were the main factors causing the yellow of poplar seedlings in northern Jiangsu Province. The yellow had certain influences on the contents of chlorophyll, SOD, POD, MDA and PPO in seedlings, among which the contents of chlorophyll and POD dropped significantly with the yellow aggravation, decreased by 80.4% and 77.7% compared with the normal levels. The influence of yellow on the contents of biochemical substances in leaves on different parts of trees was varied. The MDA content in the leaves of lower part reached the maximum (16.45 μmol·g-1) at the yellow index of II, and decreased to 1.03 mol·g-1 when the yellow index was V, which decreased by 93.7%.

Oxidases and MDA Response Characteristics in Poplar Yellow Seedling Leaves

1. Jiangsu Academy of Forestry, Nanjing 211153, Jiangsu, China

2. Agriculture and Forestry Bureau of Siyang County, Jiangsu Province, Siyang 223700, Jiangsu, China)

Abstract: By analyzing the contents of biochemical substances in soil and different parts and indexes of poplar yellow seedling leaves, the cause of yellow and its influence on various enzymes within yellow leaves was studied. The results showed that high pH value and low Mg content in soil were the main factors causing the yellow of poplar seedlings in northern Jiangsu Province. The yellow had certain influences on the contents of chlorophyll, SOD, POD, MDA and PPO in seedlings, among which the contents of chlorophyll and POD dropped significantly with the yellow aggravation, decreased by 80.4% and 77.7% compared with the normal levels. The influence of yellow on the contents of biochemical substances in leaves on different parts of trees was varied. The MDA content in the leaves of lower part reached the maximum (16.45 μmol·g-1) at the yellow index of II, and decreased to 1.03 mol·g-1 when the yellow index was V, which decreased by 93.7%.

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Oxidases and MDA Response Characteristics in Poplar Yellow Seedling Leaves

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通讯作者: 陈斌, bchen63@163.com

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