| 摘要: |
| 1996年至1997年在广西沿海山口、钦州、防城3个红树林分布区调查红树林病害,发现5科6种红树植物受到炭疽病菌的侵染。炭疽病菌主要引致叶斑,偶也危害枝梢、胚轴、引起枯萎,在不同树种上表现的症状不同。从红树病组织上分离到的这些菌株只对原寄主致病,对其他红树种类及一些陆生树种如木亡果(Mangifera indica)、扁桃(M.persiciformis)和番石榴(Psidium guajava)没能接种成功,表明具有寄生专化性。尽管这些菌株在培养特性、形态特征、致病性上有所不同,但按Suton现代分类系统均属于胶孢炭疽菌(Coletotrichum gloeosporioides)。红树炭疽病的发生与红树树种和分布区的不同而有轻重之别,虫口和机械伤口的存在使得炭疽病加重。 |
| 关键词: 红树林 炭疽病 胶孢炭疽菌 |
| DOI： |
| 投稿时间：1997-09-22 |
| 基金项目:广西青年科学基金资助项目。 |
|
| Anthracnose of Mangrove in Guangxi |
|
Huang Zeyu, Zhou Zhiquan
|
| (Institute of Biology, Guangxi Academy of Sciences, 2 Dalinglu, Nanning, Guangxi, 530003) |
| Abstract: |
| Mangrove disease was investigated in Shankuo、Qinzhou、Fangcheng mangrove areas along the coast of Guangxi from 1996 to 1997.Five families and six species of mangrove trees were infected by Colletotrichum. The disease symptom was different on different species of mangrove tree.It mainly causes leaf spot,sometimes shoot and plumular axis blight.The pathogen separated from mangrove trees of one species can't infect the other mangrove ones and other terretrial trees,such as Mangifera indica,M.persiciformis and Psidium guajava,except for mangrove trees of the same host species.It suggested that the pathogens had parasitic specialization. There were some differences in cultural character,shape and pathogenicity among different strains,but all strains belong to Colletotrichum gloeosporioides according to the Sutton's modern classification system. The serious degree of anthracnose related to the species and distribution district of margrove tree. The existence of both wounds caused by pest and mechanical cuts can make anthracnose more serious. |
| Key words: mangrove anthracnose Colletotrichum gloeosporioides |
