摘要
本试验在不同环境条件下,采用分期播种,不同发育期接种的方法,对29个大豆品种接种大豆花叶病毒(SMV)4个毒株,以观察大豆花叶病毒致病后的症状类型、研究影响症状产生的有关因素。为大豆花叶病的症状识别、品种及杂交后代的抗性鉴定以及病害防治提供理论依据。 结果表明:大豆花叶病的症状主要有10种:轻花叶、花叶、黄斑花叶、曲叶、卷叶、疤叶、畸型叶、皱缩、矮化和顶枯。 品种、毒株和环境条件均影响着大豆花叶病的症状类型和病情指数。方差分析表明:它们不仅单独起作用,还存在着环境与毒株、环境与品种和品种与毒株的交互作用,其作用顺序依次为毒株>环境>品种>毒株×品种>毒株×环境>环境×品种>毒株×环境×品种。 同一发育期接种的品种早播发病较轻,随着播期的推迟症状逐渐加重。正常播种的品种接种愈早发病愈重。
29 soybean varieties of 5 maturity groups planted at different time under different conditions were inoculated with 4 isolates of soybean mosaic virus (SMV ) at different developmental stages to observe symptom types of SMV disease, study factors affecting their occurrence and provide theoretical basis for symptom diagnosis, and resistance identification of soybean varieties and hybrid generations.The conclusions are: the maior type.s of symptom were found in the soybean varieties infect-ect with SMV: light mosaic, mosaic yellow mosaic, leaf curl, leaf roll, puckered leaf, distorting loaf, rugosity, dwarfing and top necrosis.Analysis of variance shows that disease symotoms and disease index were influenced by soy-bean cnltivars. SMV isolates. environmental factors and interaction between the factors. The af fection is: isolates>environment varities isolates × varieties>isolates × environment>envi ronment×varities>isolates×environment×varieties.The disease sympton and index of soybeans were influenced by planting dates,time of inoculation. When varieties were inoculaed at the same developmental stage, varieties planted early showed less severe symptoms than those planted late. The earlier the varieties planted normally were inoculated, the more severe their disease symptoms were.
出处
《大豆科学》
CAS
CSCD
北大核心
1990年第2期149-156,共8页
Soybean Science
