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在蔬菜作物发生的病害当中,有很多病害是由种子传播的,病菌可粘附在种子表面或者潜入到种子里面,成为田间发病的初侵染源。本文仅就蔬菜种子传播病菌的机制、途径及与种苗病害的关系进行分析,以便引起人们对种传病害的重视,进而采取有效的防治措施,减少种传病害的危害。 1 种子传播病菌的机制及途径 1.1 由种子胚内感染以后造成系统侵染。种子的胚被病原菌侵染后,种子萌发时病菌也开始活动,侵入幼苗茎部或紧随植物的生长点,造成系统侵染,如菜豆细菌叶烧病(Xanthomonas campestris Var ·Phaseoli)。苗期被侵染,全株发病,种子带菌是唯一的
Among the diseases that occur in vegetable crops, many diseases are spread by seeds, which can stick to the surface of the seeds or penetrate into the seeds and become the primary source of infection in the field. This article only on the mechanism of vegetable seed germs pathways and the relationship between the disease and seedlings to analyze, in order to arouse people’s attention on the disease, and then take effective prevention and control measures to reduce the hazards of disease borne diseases. A mechanism of seed-borne pathogens and pathways 1.1 from the seed embryo infection caused by systemic infection. After the embryo of the seed is inoculated by the pathogen, germs begin to move during seed germination, invade the stem of the seedling or follow the growth point of the plant, resulting in systemic infection such as Xanthomonas campestris Var. Phaseoli. Seedling is infected, whole plant disease, seed carrying is the only