【摘要】 甜菜花叶病是甜菜生产的世界性病害,可经多种蚜虫非持久性传播。花叶病毒侵染甜菜,嫩叶常出现脉间褪绿的明脉现象,发生皱缩;功能叶片会出现明暗相间的绿色斑驳,进而产生花叶,严重的发生坏死,给甜菜生产造成巨大损失。本研究归纳了BtMV病原及种质资源抗性的研究概况,分析了BtMV病原生物学特性、病原基因组及编码蛋白结构功能,病原介体及病毒复制模式,以及BtMV侵染甜菜植株及叶片的结构与微观变化。总结了当前用于甜菜花叶病的检测方法和甜菜种质资源的花叶病抗性与抗病反应的研究进展。提出了当前甜菜抗花叶病需要深入开展的研究论题,并对甜菜抗花叶病分子机理和基因工程育种进行了展望。为该病的深入性研究,特别是基因工程育种提供参考。更多还原

【Abstract】 Beet mosaic is an aphid transmitted viral disease of sugar beet found worldwide,transmitted by many species of aphids in the non-persistent manner.Infected beets are sometimes stunted,young leaves often show vein-clearing;older leaves show a pronounced light and dark green mottle,and are often puckered.The author concluded the situation of pathogen of Beet Mosaic Virus(BtMV) and germplasm resistance research,analyzed biological characteristics,genome and encoding protein structure function of BtMV pathogen,and studied the pathogen mediator and the virus replication mode;and also studied the structure and microscopic changes of BtMV inflected plants and leaves of sugar beet;summarized the detection methods for beet mosaic and the research progress of beet mosaic germplasm resistance and resistance reflection.The author put forwards the thesis of further research on beet mosaic resistance,and made prospects on molecular mechanics of beet mosaic resistance and genetic engineering breeding.It could be helpful for the disease resistance investigation in agricultural production and shed some light for genetic engineering of disease resistance in beet breeding and cultivations.更多还原