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1962年飼养并系統观察桃蚜 Myzus persicae (Sulzer) 在感染蕪菁花叶病毒(TpMV)的和健康的大白菜上的发生結果表明,病株对桃蚜不利。接种后24天,健株上的蚜虫数量为病株的1.8倍;健株上有翅若蚜占总蚜量的9.8％,而病株上达16.3％。 1964年比較测定了健株与具有不同症状(初現明脉、明显花叶、叶片严重皺縮)白菜苗的(1)含糖量、(2)全氮(可溶性氮)及非蛋白氮,以此算出蛋白氮含量、(3)細胞渗透压、吸水压,并以此算出細胞膨压。結果表明,病株比健康植株含糖量增加36.59—41.95％;全氮量与非蛋白氮含量均下降,其中非蛋白氮減少更多:由初現明脉期降低5.0％至叶片严重皺縮期降低86.7％,而蛋白氮初期有下降,后期又逐渐回升。病株的細胞渗透压增加了2％—5％,吸水压增加14.3％—42.9％,細胞膨压則下降36.3％—500.7％。从結果分析和有关文献佐証,作者認为病株不利于桃蚜的发生是由于糖/氮比增高,細胞膨压下降的結果,前者影响蚜虫的营养,后者影响蚜虫的取食量。
The occurrence of Myzus persicae (Sulzer) on healthy Chinese cabbage infected with Turnip mosaic virus (TpMV) in 1962 and systematic observation showed that the diseased plants were detrimental to Myzus persicae. On the 24th day after inoculation, the number of aphids on healthy plants was 1.8 times that of diseased plants. On the healthy plants, the number of aphids on winged plants accounted for 9.8% of the total aphid, while that on diseased plants was 16.3%. In 1964, (1) sugar content, (2) total nitrogen (soluble nitrogen) and non-protein nitrogen of cabbage seedlings with different symptoms (early Mingyin, obvious mosaic and serious folds) To calculate the protein nitrogen content, (3) cell osmotic pressure, water pressure, and to calculate the cell turgor. The results showed that the sugar content of diseased plants increased by 36.59-41.95% than that of healthy plants, the content of total nitrogen and non-protein nitrogen decreased, and the content of non-protein nitrogen decreased more: the content of non-protein nitrogen decreased by 5.0% Period decreased 86.7%, while the protein nitrogen decreased in the early stage and then gradually recovered. The cell osmotic pressure of diseased plants increased by 2% -5%, water pressure increased by 14.3% -42.9%, and cell turgor decreased by 36.3% -500.7%. From the analysis of the results and the evidences of the relevant literature, the author believes that the diseased plants are not conducive to the occurrence of Myzus persicae because of the increase of sugar / nitrogen ratio and the decrease of cell turgor pressure. The former affects the nutrition of aphids, and the latter affects the feeding amount of aphids.