초록

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대추나무빗자루病이 마름무늬매미충에 依해 쥐똥나무로 傅染되었다. 羅病대추나무에서 採集한 마름무늬매미층이 3~4齡期若蟲을 溫室內에 植栽된 羅病대추나무에 20日間 獲得吸汁시킨 후, 쥐똥나무의 實生幼苗에 株當 10마리씩 넣고 모두 斃死할 때까지 接種吸汁시켰다. 接種開始日로부터 103~111日後에 5株의 幼苗中 3株에서 典型的인 빗자루病微이 나타났다. 病微이 나타난 쥐똥나무幼苗의 篩部組織을 電子顯微鏡으로 檢鏡한 結果 마이코풀라스마가 檢鏡되어 蟲媒傅染이 確認되었다.

Abstract ▼ AI-Helper

Jujube witches"-broom mycoplasma (JWM) was transmitted experimentally to Ligustrum obtusifolium by Hishimonus (Rhombic marked leafhopper). Third and fourth instar nymphs of H. Sellatus were collected from diseased jujube trees in a field. The leafhoppers were allowed to feed on the witches"-broom in...

Jujube witches"-broom mycoplasma (JWM) was transmitted experimentally to Ligustrum obtusifolium by Hishimonus (Rhombic marked leafhopper). Third and fourth instar nymphs of H. Sellatus were collected from diseased jujube trees in a field. The leafhoppers were allowed to feed on the witches"-broom infected jujube trees in the green house for 20 days to insure acquisition of JWM and then transferred to young healthy seedlings of L. obtusifolium. Ten leafhoppers were allowed to feed on each of the five exposed L. obtusifolium seedlings in the temperature controlled (25±2℃) greenhouse. About 103-111 days after transfer of the leafhoppers, three out of five plants showed typical witches"-broom symptoms. Mycoplasma-like organisms in the infected tissues were observed under an electron microscope, which confirmed the transmission of the JWM to L. obtusifolium.

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