近年来，甘肃省随着百合栽培面积的不断增加，枯萎病发病率越来越高，严重影响百合的产量和品质。通过对兰州百合植株进行不同接菌处理，对其发病率、病情指数进行了分析，并切片观察了兰州百合枯萎病发病前后病原菌侵染的解剖机理。结果表明，伤根+鳞茎盘刺伤+灌根处理更能加剧接菌百合植株的病情。相比较于对照不接菌处理，接菌处理后发病的兰州百合，其根、茎、叶、鳞叶的内部结构都有了不同程度的破坏，淀粉粒含量明显减少，甚至没有淀粉粒贮藏。

In recent years， with the increasing area of lily cultivation in Gansu province， the incidence of Fusarium wilt is getting higher and higher， which seriously affects the yield and quality of lily. The morbidity and disease index of Lanzhou lily plants were studied through different inoculation treatments of lanzhou lily plants. The anatomical mechanism of the infection of the pathogens of Fusarium wilt of Lanzhou lily was studied by section observation. The results show that wounded roots + bulb disk stabbed+ irrigated root treatments could aggravate the disease of lily recipient. Compared with the control group without inoculation， the internal structure of the root， stem， leaf， and scale of lanzhou lilies after the Fusarium wilt had been damaged to different degrees， the content of starch granules was significantly reduced， and even no starch granules were stored.

S644.1

甘肃农业大学2018年SRTP项目(20181904)。