1. 本試驗은 罹病된 植物의 殘滓物 또는 土壤中에 있는 麥類赤黴病(Gibberella zeae (Mont.) sacc.)이 14種의 作物幼苗에 미치는 病原性을 檢定하고자 하였다. 2. 이들 作物은 病原菌을 人工的으로 接種한 土壤, 그리고 麥類赤黴病의 發生이 自然的으로 甚했던 곳과 輕했던 곳의 土壤에 供試하여 本菌에 對한 罹病性을 檢定하였다. 3. 人工接種試驗에 있어서, 보리, 밀, 호밀, 콩, 벼, 메밀, 옥수수, 목화, 녹두는 罹病性이었고 팥, 참깨, 수수, 무우, 배추 등은 抵抗性을 나타내었다. 4. 人工接種試驗에 있어서, 罹病性作物의 發芽率은 벼, 옥수수, 목화를 除外하고 接種土壤과 非接種土壤에 있어 顯著한 有意差가 있었다. 芽時前立枯는 보리, 옥수수에서만, 芽時後立枯는 호밀, 밀, 벼, 메밀, 보리, 옥수수에서 일어났다. 罹病性作物의 大部分은 第2次根이 거의 腐敗하였고 第1次根도 腐敗 乃至 變色되어 있었다. 罹病性作物은 草長이 接種土壤과 非接種土壤에 있어 顯著한 有意差가 있었다. 5. 自然狀態에서 麥類赤黴病의 發生이 甚했던 곳과 輕했던 곳의 土壤에 보리, 밀, 호밀을 接種하였으나 本菌에 依한 侵害나 影響을 發見할 수 없었다.
1. Purpose of this experiment is to investigate the influence of wheat scab fungus(Gibberella zeae) remaining in soil or residues of infected plants to the growth of the seedlings of 14 different crops. 2. Susceptibility of these crops to the infection by G. zeae was investigated by planting these crops both to the artificially inoculated soils and naturally infected soils where both serious and light wheat scab epidemic have occurred previously. 3. In artificial inoculation tests, barley, wheat, rye, soybean, rice, buckwheat, corn, cotton and greenbean has shown susceptible reaction, while indianbean, sesame, sorghum, chinese cabbage and radish has shown resistant reaction. 4. In artificial inoculation tests, there was significant difference in the germination ratio of the susceptible crops between the plants planted in inoculated soils and uninoculated soils with the exception of rice, corn and cotton. Preemergence seedling blight was confined only to barley and corn, whereas postemergence seedling blight was confined to rye, wheat, rice, buckwheat, barley and corn. In most of the susceptible crops secondary roots were almost rotted and the primary roots were either partially rotted or discolorated in inoculated soil. There was significant difference in the stem length of the plants grown in inoculated soils and uninoculated soils in susceptible crops. 5. No infection by G. zeae was observed when wheat, barley and rye plants were sown to the soils where both serious and light wheat scab epidemic occurred naturally.
AI 요약
연구주제
연구배경
연구방법
연구결과
주요내용
목차
Summary Introduction Materals and Methods Experimental Results Discussion and Conclusion 摘要 Literature Cited