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观察了５个抗青枯病水平不同的番茄品种（品系）的愈伤组织对青枯菌平板培养滤液及活菌体的反应．结果表明，抗病材料愈伤组织较为敏感，处理后较早出现褐变、崩溃等较重的受害症状，感病材料的症状出现较慢、较轻；番茄愈伤组织的离体抗性与田间抗性呈相反趋势．
The responses of five callus cultivars (lines) with different levels of resistance to bacterial wilt to platelet culture filtrate and viable cells of R. solani were observed. The results showed that the callus of disease-resistant material was more sensitive, and the symptom of susceptible material appeared slower and lighter, such as browning and collapsing appeared earlier after treatment. In vitro resistance of tomato callus Field resistance showed the opposite trend.