几种松树对褐斑病抗性的比较及病害来源的探讨

›› 1988, Vol. 24 ›› Issue (1): 41-47.

几种松树对褐斑病抗性的比较及病害来源的探讨

林兆生梁子超

华南农业大学林学系

收稿日期:1985-09-09 修回日期:1900-01-01 出版日期:1988-02-25 发布日期:1988-02-25

A COMPARATIVE RESISTANCE OF SEVERAL PINE SPECIES TO BROWN SPOT NEEDLE BLIGHT AND THE ORIGIN OF THE DISEASE

Lin Zhaosheng,Liang Zichao

South China Agricultural University

Received:1985-09-09 Revised:1900-01-01 Online:1988-02-25 Published:1988-02-25

摘要/Abstract

摘要： 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。

Abstract: A comparative resistance of several pine species to brown spot needle blight was studied by means of a field survey and some natural and artifical inoculations.Pinus massoniana appeared to be most resistant and P.elliottii most susceptible.P.taeda and P.caribea belonged to intermediate types.This resistance could be differentiated by the number and type of the needle spots. At the room temperature and at 5℃ the pathogen,lecanosticta acicola,may survive for over 7 months in pieces of the infected leaves,which were always carried along with seeds.The cultural characteristics.and the pathogenicity of the P.thunbergii isolate from Jiangxi Province were significantly different from those of P.elliottii isolates from Guangdong,Guangxi and Fujian Province.Presumably the pathogens of brown spot needle blight on P.elliottii were introduced from U.S.A.in 1970's.

林兆生梁子超. 几种松树对褐斑病抗性的比较及病害来源的探讨[J]. , 1988, 24(1): 41-47.

Lin Zhaosheng;Liang Zichao. A COMPARATIVE RESISTANCE OF SEVERAL PINE SPECIES TO BROWN SPOT NEEDLE BLIGHT AND THE ORIGIN OF THE DISEASE[J]. , 1988, 24(1): 41-47.