论文部分内容阅读
本研究以常规方法,连续六年在大田及室内进行病症观察和发病适温测定;测染寄主种类;传染传播途径;病毒质粒的电镜技术研究,初步获得以下结果:1、发病适温在10℃左右,气温升高到15℃以上则不发病;2、供试小麦均感病,而大麦、黑麦、燕麦、小黑麦等则否;3、病害传播途径除接触外,主要为病麦田土,而昆虫和种子不传播;4、病毒质粒为150-2000×13毫徽米,甚至有长达4500毫微米的线状质粒;5、病理组织细胞中有风轮状的内含体,显然是土传稻麦线状病毒所致的花叶病。目前,戒省已获得抗病品种,对该病的蔓延起到抑制作用。有关传毒介体究竟是禾谷多粘菌或是其他真菌,以及介体与病毒的关系,正在继续研究中。
In this study, the conventional method was used to observe the disease and the onset temperature in field and indoor for six years in a row. The main types of host were detected, the route of infection and transmission, the electron microscopy of viral plasmids. The results were as follows: 1. ℃, the temperature rises above 15 ℃ is not the disease; 2, the test wheat are susceptible, and barley, rye, oats, tritium, etc. are not; 3, the route of disease transmission in addition to contact, the main disease Wheat field soil, insects and seeds do not spread; 4, the virus plasmid is 150-2000 × 13 mm Huimi, and even up to 4,500 nm linear plasmid; 5, , Apparently soil mosaic rice virus caused mosaic disease. At present, the province has access to disease-resistant varieties, the spread of the disease has been inhibited. Whether the toxic mediators are cereal polymyxa or other fungi and the relationship between the mediators and viruses is continuing.