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通过对病区调查、室内人工接种和病区自然接种等方法鉴别南方几种松树对褐斑病的抗性表明:本地树种马尾松(Pinus massoniana)最为抗病,火炬松(Pinus taeda)次之,湿地松(Pinus elliottii)和八十年代引种的古巴加勒比松(Pinus caribea var,caribea)最为感病,六十年代引种的古巴加勒比松也较抗病,仅略次于本地的马尾松。湿地松种子未见带菌,与种子混合的针叶上的病菌在室温和5℃条件下均可存活7个月以上,江西的日本黑松(Pinus thumlergii)上的菌株其培养特性和致病性与广东、广西和福建的湿地松的菌株截然不同。
Identification of southern Chinese pine resistance to brown spot by means of ward survey, indoor artificial inoculation and natural inoculation of ward showed that Pinus massoniana was the most resistant to the disease and Pinus taeda was the second Pinus elliottii and Pinus caribea var caribea introduced in the 1980s. The Caribbean pine introduced in the 1960s was also more resistant to disease than the native Pinus massoniana. Pseudo pine seeds did not have any fungi, and the germs on the needles mixed with seeds could survive more than 7 months at room temperature and 5 ℃. The culture characteristics and pathogenicity of strains on Pinus thumlergii And Guangdong, Guangxi and Fujian slash pine strains very different.