CAJ | 학술논문

用甘薯青枯菌液及其粗毒素在温室内测定甘薯幼苗的抗病性，结果表明青枯菌菌株侵染甘薯幼苗的病情指数与其粗毒素的致萎度之间呈正相关，相关系数为0.9458(n=88)，达极显著水平；用5个不同致病力(强、中、弱)甘薯青枯菌株及其粗毒素分别接种抗、中、感甘薯品种华北48、广薯15、惠红早，结果表明甘薯品种对不同致病力青枯病菌菌株及其粗毒素的抗性呈极显著正相关，相关系数在0.9992～1.0000之间；以不同致病力甘薯青枯菌混合菌株及其粗毒素接种抗、中、感甘薯品种97-10、广薯15、惠红早，结果表明不同抗性甘薯品种病情指数与致萎度之间也存在极显著正相关，相关系数为0.9257～0.9651。说明在室内用粗毒素检测甘薯幼苗的致萎度，能够反映甘薯对甘薯瘟病的抗病或感病水平。
용감서청고균액급기조독소재온실내측정감서유묘적항병성，결과표명청고균균주침염감서유묘적병정지수여기조독소적치위도지간정정상관，상관계수위0.9458(n=88)，체겁현저수평；용5개불동치병력(강、중、약)감서청고균주급기조독소분별접충항、중、감감서품충화북48、엄서15、혜홍조，결과표명감서품충대불동치병력청고병균균주급기조독소적항성정겁현저정상관，상관계수재0.9992～1.0000지간；이불동치병력감서청고균혼합균주급기조독소접충항、중、감감서품충97-10、엄서15、혜홍조，결과표명불동항성감서품충병정지수여치위도지간야존재겁현저정상관，상관계수위0.9257～0.9651。설명재실내용조독소검측감서유묘적치위도，능구반영감서대감서온병적항병혹감병수평。
The seedling of sweet potato were inoculated with Ralstoniasolanacearum or treated with their crude toxins in the greenhouse.The results showed that there were significantly positive correlation between the disease indexes of Ralstonia solanacearum infection and wilting degree of crude toxins treatment,r=0.9458.When Huabei 48、Guangshu 15、Huihongzao sweet potato varieties with different resistance were inoculated with five isolates of Ralstonia solanacearum with different pathogenicity and treated with their crude toxins,the disease index of the infection had significantly positive correlation with the wilting degree of their crude toxins treatment, r ranged from 0.9992 to 1.0000;When 97-10、Guangshu 15、Huihongzao sweet potato varieties were mix-inoculated with five Ralstonia solanacearum isolates or treated with their crude toxins, there were significantly positive correlation between the disease index of infection of the mixed pathogen and the wilting degree of their crude toxin treatment,the r value were 0.925 7-0.965 1.The crude toxins of isolates of Ralstonia solanacearum provide with a cheap and exact tool to identify the resistance of sweet potato to the pathogen.