Paddy Weeds Serving as the Possible Reservoirs for Rice Bacterial Leaf Blight

답잡초를 대상으로 벼 흰빛잎아름병 기주절위구명

This study was conducted to identify the possibility of paddy weeds served as the host plant of bacterial leaf blight, using various bacterial groups and inoculation methods. The results obtained can be summarized as follows. 1. Alopecurns spp., Setaria viridis P. Beauv., and Leersia juponica Makino were identified the most susceptible to bacterial leaf blight, similar to Milyang 23 which was used as a susceptible check variety. The others such as Digitaria adscendens Hem., Eleusine indic aGaertin., Cyperns serotinus Rottb, Cyperns difformis L. showed slight infection but most of broadleaf weeds were resistant to bacterial leaf blight. 2. Weed species showing early susceptibility maintained their susceptibility throughout the growth stages. Group I of bacterial leaf blight was the most effective to develop infection symptom to weeds. 3. Pin and scissor inoculation methods were more effective mean for infection than spray method which was used without wound.

답잡초 돌피 외 19종을 대상으로 병원균군, 접종방법 및 잡율의 생육시기를 달리하여 벼흰빛잎마름병의 기주범국 구명시험에서 얻어진 결과를 요약하면 다음과 같다. 1. 나도겨풀, 강아지풀, 독새풀 등은 밀양 2003에 준한 이병성을 나타냈으며, 그 밖에 바랭이, 왕바램이 알방동산이, 너도방동산이, 바람하늘지기 등에서 이병성을 보였으나 광엽잡초에는 전혀 이병되지 않았다. 2. 생육초기에 이병성을 크게 보인 강아지풀, 나도겨풀, 독새풀은 생육전기간을 통해서 이병성이 컸으며, 균군간에는 제일군이 병원성이 다소 큰 것 같았다. 3. 접종방법별로는 유상접종인 핀 및 가위 접종이 무상접종의 분무접종보다 이병성이 켰다.