结果表明，西瓜幼苗根毛区是枯萎病菌最易侵染的部位。
The results showed that the root hair zone was the most susceptible region.
感茎腐病品种掖单13号幼苗根组织被侵染细胞的壁完整，但细胞质严重凝聚或细胞器发生解体。
When root tissue of susceptible hybrid Yedan13 was inoculated by P. inflatum, the cell wall was complete, while the grave aggregation of cytoplasm and disintegration of cellular organelle arose.
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