论文部分内容阅读
水稻细菌性褐斑病病原细菌 Pseudomonas oryzicola Klement 的寄主范围较广,除为害水稻外,尚能侵染陆稻、小麦、谷子、高粱等四种禾本科作物及30余种禾本科野生杂草。在自然条件下被 P.oryzicola 侵染的野生禾本科植物有:无芒野稗、野稗、钿画眉草、水稗草、稻稗、菵草、狗尾草、东北鹅冠草、雀麦一种、偃麦草、拂子茅草、匐茎剪股颖、披礆草、垂披礆草、无芒雀麦草及荻草等16种。经人工接种而感病的禾本科植物有:知风草、沼早熟禾、看麦娘一种、老芒麦、雀麦、早熟禾、长芒野稗、紫羊茅、短穗看麦娘、稗子、长叶草、萎酸草及小糖草等13种。在稻田周围的大多数禾本科杂草,都轻重不同的感染了水稻细菌性褐斑病。而且发病早于水稻,这些野生杂草寄主上的病原是水稻初次侵染来源之一。试验结果证明,血清玻片凝聚反应是鉴定永稻细菌性褐斑病寄主范围简便而准确的方法。
The bacterial host of Pseudomonas oryzicola Klement has a wide range of hosts and can infect four kinds of gramineous crops such as upland rice, wheat, millet and sorghum, as well as more than 30 grass weeds. Wild grasses infected with P.oryzicola under natural conditions are: barnyardgrass, barnyardgrass, thrush, barnyardgrass, barnyardgrass, foxtail grass, foxtail grass, northeastern grass, , Agropyron striatellus, thatch grass thatch, ranunculus pubescens Ying Ying, Phoebe gracilis, vertical Phyllosticta, Gui Bromus grassless and Diogi 16 species. Gramineous plants that have been inoculated by artificial inoculation are as follows: Phyllostachys praecox, marsh pomaceae, Ophiopogon japonicus, Elymus spp., Bromeliad, Kentucky bluegrass, Barnyardgrass, , Barnyard grass, long leaf grass, edulis and sugar grass and other 13 species. Most of the grass weeds around the paddy fields were different in severity from the bacterial brown spot. And earlier than the incidence of rice, the host of these wild weeds on the pathogen is one of the primary sources of rice infection. The test results show that the serum glass agglutination reaction is a simple and accurate method to identify the host range of bacterial brown spot disease in rice.