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麦类萎缩病毒即土传小麦花叶病毒[10],能感染大小麦及黑麦早已被国内外所公认。经过作者近年来的调查研究,发现本病毒的寄主范围除麦类、水稻、玉米、高粱、甘蔗、薏苡等禾本科作物及禾本科杂草如看麦娘、稗、李氏禾等等以外,尚能感染十字花科植物中的甘兰型油菜、萝卜、油冬儿、白莱及蔊菜,其主要症状特征是叶片皱褶、植株矮化。但在蔊菜上的症状特征是系统性小枯,本病毒感染十字花科植物的传染媒介和麦类相同,主要也是禾谷类多粘菌(Polymyxa graminis Le’d)。此外,也能由人工汁液传毒接种,当麦类萎缩病毒感染油冬儿后,能由昆虫如小菜蛾幼虫及蚜虫等分别传毒到油冬儿或菠菜上,根据鉴别寄主如玉米,菠菜等的症状反应,认为我国我省目前存在的麦类萎缩病毒株系和国外已报导的病毒株系不同。
Wheat atrophy virus that soil-transmitted wheat mosaic virus [10], can infect large wheat and rye has long been recognized at home and abroad. After the author’s investigation and research in recent years, we found that the host range of the virus except gramineous crops such as wheat, rice, corn, sorghum, sugarcane and coix, and weeds such as weed, barnyardgrass, Still can invade cruciferous plants in the Brassica napus, radish, oil winter children, white rice and water spinach, the main symptom is characterized by leaf folds, dwarf plants. However, the symptom characteristics in Brasenia schizandrae are small and systematic. The vector infected with cruciferous viruses is the same vector as wheat and is mainly Polymyxa graminis Le’d. In addition, the virus can also be inoculated by artificial juice, when wheat atrophy virus infection in winter, the insects such as Plutella xylostella larvae and aphids, respectively, to the oil winter spinach or spinach on the identification of host such as corn, spinach Symptoms such as response, that my province currently exists in our province wheat atrophy virus strains and foreign strains have been reported different.