按照在禽类群体中的致病力，可将禽流感病毒分为两类：高致病性或低致病性。
AI viruses are divided into two groups based on their ability to cause disease in poultry: high pathogenicity or low pathogenicity.
研究同时表明，同一融合群内不同菌株致病性有差异，并且同一菌株对不同玉米自交系的致病力的强弱表现不完全一致。
The results also showed that there were discrepancies in pathogenicity among isolates in the same anastomosis group, as well as the same isolate to different maize inbred.
以2株溃疡病菌株及其亚硝酸盐诱变菌株、异核体菌株接种苹果进行致病性测定，经方差分析和多重比较表明，溃疡病菌致病力变异可由亚硝酸盐诱变、异核体产生。
By inoculation on apple with 2 wild canker pathogens and their nitrite mutant isolations and heterokaryotic isolations, the pathogenicity was got and analyzed by variance and multiple comparisons.
应用推荐