Variations of several substances in the seedlings of five oat varieties infested by aphids | 蚜虫为害对五个燕麦品种苗期体内几种物质的影响
2011
Zhu Yongfeng, Gansu Agricultural University, Lanzhou(China),College of Grassland Science | Chen Ming, Gansu Academy of Agricultural Sciences, Lanzhou(China) | Liu Changzhong, Gansu Agricultural University, Lanzhou(China),College of Grassland Science
chinois. 摘 要：［目的］研究蚜虫为害后燕麦苗期植株体内的叶绿素、可溶性糖、可溶性蛋白、总酚含量的变化，评价这4种物质与燕麦抗蚜性的关系，探索燕麦抗蚜的生化机制，为选育抗蚜燕麦品种提供科学依据。［方法］ 选取田间具有不同抗蚜表现的5个燕麦品种，待幼苗长至3叶期接蚜，分别于接蚜时和接蚜后不同时间测定其体内的叶绿素、可溶性糖、可溶性蛋白、总酚的含量，与同期未接蚜植株做比较。［结果］ 随着感蚜时间增加，每个品种叶绿素含量均明显降低，作为抗蚜物质的总酚含量增加，可溶性糖和可溶性蛋白也有所增加。［结论］ 说明燕麦的抗蚜性与其体内的可溶性糖、可溶性蛋白、酚类物质含量有关。
Afficher plus [+] Moins [-]anglais. [Objective] The change in chlorophyll, soluble sugar, soluble proteins and total phenolics of oat infested by aphids were tested to evaluate their relationships with the resistance to the aphids, in order to understand the biochemical mechanism of the resistance and provide the basis for the selection of anti_aphid oat varieties.[Method] ‘Qinyongjiu118’, ‘Qinghai tianyanmai’, ‘Qingyin No2’ and ‘Danmai444’, with resistance to aphids to different extents, were inoculated with aphids at three_leaf stage, 30 aphids per plant, and chlorophyll, soluble sugar, soluble proteins and total phenolics were determined at the second, fourth and sixth day, compared with the control. [Result] With increasing time, chlorophyll decreased obviously in all varieties, but the anti_aphid compounds, total phenolics, as well as soluble sugar and soluble proteins, increased. [Conclusion] It indicated that the anti_herbivore effect of oat was related to soluble sugar, soluble proteins and total phenolics in plants.
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