测定大白菜不同品种对孤丁病毒的抵抗能力,一般使用病毒在苗期接种,经过全部生长发育以后,确定其病情指数,从而确定其抗病程度。这个过程是相当长的。因此能在幼苗期找到一个相关因子,从而能在白菜幼苗期基本上确定其成株期抗病的能力,是有实际意义的。过去两年来,我们曾试探一些品种间细胞生理现象的差异,以求获得这样一种因子,结果大多数都不稳定。在这些试探的细 Determination of different varieties of Chinese cabbage resistance to Solitary Bugs virus, the general use of virus inoculation at seedling stage, after all the growth and development, to determine the disease index, to determine the disease resistance. This process is quite long. Therefore, we can find a correlation factor in the seedling stage, which can basically determine its resistance to disease at adult stage in cabbage seedling is of practical significance. In the past two years, we have explored the differences in the cellular physiology among some varieties in order to obtain such a factor, and most of the results are not stable. Fine in these temptations