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白菜孤丁病毒与油青菜花叶病毒、甘兰花叶病毒及蘿卜花叶病毒经各种配合的混合接种后,在症状土及發病率上沒有显著的差异,说明它們不但是同一个毒种,而且可能是同一个毒株。土壤温度影响白菜弧丁的發病,土温在30℃时,高度感病的胶州白菜的發病几乎比在15℃的土温高出一倍。但这种关系在耐病的青白口上,以及感病的另一菜种油青菜(Brassica Chinensis L.)上,則不显著。白菜在幼苗期受侵较后期受侵的發病严重,但这种影响也是以高度感病的品种为显著,例如胶州白菜在8月29日接种的比在10月23日接种的病情指数高一倍多。这种关系对耐病的青白口及高度抗病的山东二号说来,在北京田间情况下不明显。在北京和辽宁兴城两地經1954及1955两年的比較試驗,选出了高度抗孤丁病的山东一号及二号、公主岭的大麻叶及兴城的大麻叶等4个品种。北京的青白口在北京地区是一个耐病的品种,但在兴城則失去其耐病性。山东著名的胶州白菜是一个高度感病的品种,其他如东北的半矬菜在兴城、徐水的白帮核桃纹在北京都是高度感病的。
After mixed inoculation with various combinations of cabbage solitary butterflies virus and cabbage mosaic virus, cabbage mosaic virus and radish mosaic virus, there is no significant difference in the symptoms of soil and incidence, indicating that they are not only the same species, And may be the same strain. Soil temperature affected the incidence of cabbage arc Ding, the soil temperature at 30 ℃, the highly susceptible Jiaozhou cabbage almost twice as much than the soil temperature at 15 ℃. However, this relationship was insignificant in the disease-resistant Qingbaikou and in the susceptible Brassica Chinensis L. The incidence of cabbage invasion in late seedling stage is serious, but this effect is also significant in highly susceptible varieties. For example, the Jiaozhou cabbage on August 29 was inoculated more than the disease index on October 23rd More times. This relationship is not obvious for the disease-resistant Qingbaikou and the highly disease-resistant Shandong No.2 in the field of Beijing. In Beijing and Liaoning Xingcheng two places after 1954 and 1955 two years of comparative experiments, selected a highly resistant to the disease of Shandong Shandong No. 1 and No. 2, Gongzhuling cannabis leaves and cannabis leaves Xingcheng 4 varieties. Qingbaikou in Beijing is a disease-resistant variety in Beijing, but it lost its disease-resistance in Xingcheng. Shandong famous Jiaozhou cabbage is a highly susceptible variety, others, such as the northeast half-boiled vegetables in Xingcheng, Xu Shui’s white-walnut pattern in Beijing are highly susceptible.