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首页> 外文期刊>Israel Journal of Plant Sciences >Host-parasite relations in a population of wild emmer in eastern Galilee
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Host-parasite relations in a population of wild emmer in eastern Galilee

机译：加利利东部野生埃默种群中的寄主与寄生虫关系

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摘要

In the years 1983 to 1993 populations of wild emmer growing on pasture land near Kibbutz Ammiad in eastern Galilee were subjected to a study of fungal diseases. In their natural environment in a rainfall and temperature range suitable for the pathogens studied, the plants were practically free of disease. They showed only extremely low incidence of infection by foliage fungi and the take-all root disease. However, over a nine-year period, during which self progenies of some four thousand plants from different habitats on the site were grown in 20 field- or nethouse-nurseries, heavy spontaneous infection with the three common wheat rusts and powdery mildew and moderate infection with septoria leaf blotch were observed, Artificial inoculation of a field planting with septoria glume blotch also resulted in heavy infection. Seedlings of some of the sets of progenies derived from disease-free plants were inoculated in controlled environments with different isolates of seven fungal species. In these tests, almost all accessions showed susceptibility to all or part of the isolates. Races of the three rust diseases and of powdery mildew, which had been isolated from the wild Ammiad populations, elicited responses of total susceptibility. The strategies that suppress expression of disease in susceptible wild-growing plants are not well understood, and the need for studying them is stressed.
机译：在1983年至1993年间，对位于加利利东部的基布兹·安米亚德附近的牧场上生长的野生Emmer种群进行了真菌病研究。在适合于所研究病原体的降雨和温度范围内的自然环境中，这些植物几乎没有病害。他们显示只有极低的被树叶真菌和全根病感染的几率。但是，在九年的时间里，在该地点的20个田间或网房种植了该地点不同生境的约四千株植物的自子代，其中三株常见的小麦锈病和白粉病受到中等程度的自发感染，中等程度感染观察到带有棕褐色叶片斑点的斑点，人工接种带有棕褐色斑点胶斑点的田间接种也导致了严重的感染。将来自无病植物的部分后代的幼苗接种在受控环境中，接种了七种真菌的不同菌株。在这些测试中，几乎所有的登录品都显示出对全部或部分分离物的敏感性。从野生的Ammiad种群中分离出来的三种锈病和白粉病的种族引起了人们对总敏感性的反应。抑制易感野生植物中疾病表达的策略尚未广为人知，因此有必要对其进行研究。

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