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研究结果表明,广东水稻橙叶病病原(MLO)的传染介体和越冬介体昆虫只有电光叶蝉(Recilia dorsalis)一种,但其卵不传递该病原到子代若虫,越冬寄主植物只有水稻的再生稻株和落粒自生稻株。在茂名病区的冬、春期间电光叶蝉的带菌虫和带菌再生稻及感病落粒自生稻始终存在,其带菌率分别为2.33％—35.11％、2.37％—17.78％和1.95％—16.67％。在茂名地区由于冬、春气温不甚低,电光叶蝉仍能继续繁殖越冬,并能不断获菌和传病,所以说该病原是动态越冬的。室内试验表明,带菌电光叶蝉的寿命可长达105—125天,而在茂名的秋收期至翌年春播期一般105天,据此推测有些带菌虫可从秋收后直接存活和传病原到春播稻苗。看麦娘(Alopecurus aequalis)用电光叶蝉人工接种并回接水稻成功。但在病区田间调查从未发现病株。以下植物人工接种不成功:野生稻(Oryzea rufipogon)、小麦(Triticum aestivum)、玉米(Zea mays)、李氏禾(Leersia hexandra)、稗草(Echinochloa crus-gallis)。
The results showed that there was only one species of Recilia dorsalis in the vector of MLO and overwintering mediators in Guangdong, but the eggs did not transfer this pathogen to the progeny nymphs. The overwintering host plants only had rice Of regenerated rice plants and self-priming plantlets. In the winter and spring of Maoming ward, there was always the carrying fungus, the carrying regenerating rice and the susceptible falling self-pollination rice leafhopper with the rate of 2.33% -35.11%, 2.37% -17.78% and 1.95% -16.67 %. In Maoming area due to winter, spring temperature is not very low, light leafhopper can continue to breed overwintering, and can continue to get bacteria and disease, so that the pathogen is dynamic overwintering. Laboratory tests showed that the lifespan of electrophorous leafhoppers can last as long as 105-125 days, while in Maoming the autumn harvest period to the next spring usually 105 days, according to which it is speculated that some of the bacteria can live directly from the autumn harvest and the transmission of the original spring to rice seedling. Alopecurus aequalis was successfully inoculated and switched back to rice using a light-handed leafhopper. However, in the ward field investigation never found diseased plants. Artificial inoculation of the following plants was unsuccessful: Oryzea rufipogon, Triticum aestivum, Zea mays, Leersia hexandra, Echinochloa crus-gallis.