【摘要】 发现了小麦的一种"黄化类型"病害。病株维管束的韧皮部内有大量病原体。病原体有多种形态,大小一般约为0.5—0.8μm,并看到膜有厚薄不均的现象。四环素族抗菌素和青霉素能暂时抑制这种病害的发展。观察结果表明,小麦黄化条纹病的病原体为类立克次氏体(Rickettsialike organism)。更多还原

【Abstract】 We have discovered a yellows-type disease of wheat in Baoding. When the diseased tissue has been examined with the light microscope, a large amount of microorganisms have been found in the best of the vascular bundle.Electron micrograph shows that the microorganisms are pleomorphic, 0.5—0.8 μm in size, with uneven envelope.Tetracycline and penicillin may temporarily suppress the symptom of the disease. From the evidences mentioned above we believe that the causal organism of the yellows-type of disease is a rickettsia-like organism.更多还原