柑桔黄龙病原侵染长春花和回接成功

    AN INVESTIGATION ON V1NCA ROSEA AS A HOST PLANT OF CITRUS YELLOW SHOOT BLO

    • 摘要: 柑桔黄龙病原类细菌(BLO)由草地菟丝子(Cuscuta campestris Yunck)传染到长春花(Vinca rosea L.)上和回接成功。用透视电镜和扫描电镜检查发病长春花和回接发病的甜橙苗的韧皮部筛管细胞,均发现黄龙病原BLO,长度为360~600nm,直径为100~120nm,细胞壁厚为25~30nm。

       

      Abstract: Based on the successful transmission and back transmission, Viuca rosea was proved to be a host plant of the yellow shoot BLO. The typical symptom on both sweet orange and Vinca rosea seedlings was shoot yellowings The BLO was found to exist in the phloem cells of the diseased plant of Vinca rosea and sweet orange including the aweei orange plant from which the BLO iras transmitted and to which the BLO was back transmitted!. The BLO was measured to be 360-600 nm in length, 100-120 nm in width, with a unit membrane (or cell wall) of 25-30 in thickness.

       

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