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在树木病害中,有关病菌潜伏侵染的现象,在国内外均有报道.如国外已证明脐橙、葡萄和柚的果实组织中有Colletotrichumgloeosporides,Alternariaspp,Guigna-rdia citri和Septoria citricola菌的潜伏侵染存在.国内曾报道过Dothiorella ribis,Fusarium tricinatum引起的国槐溃疡病菌的潜伏侵染,和柑桔的枝干皮层及叶组织中多种病菌的潜伏侵染.根据有关资料报道,杉木炭疽病菌(Glomerella cingulata)也有潜伏侵染的现象.为了解该菌在南京地区潜伏侵染规律,笔者对南京中山陵北坡王家湾和蒋王庙两地杉木林进行了分离调查,同时将分离所得炭疽病菌进行人工接种,证实杉木炭疽病菌存在潜伏侵染.现将观察情况整理如下:
In tree diseases, the phenomenon of latent infection of pathogens has been reported both at home and abroad.If abroad, it has been proved that there are latent infection of Colletotrichum gloeosporides, Alternariaspp, Guigna-rdia citri and Septoria citricola in the fruit tissues of navel orange, grape and grapefruit There has been reported in China has Dothiorella ribis, Fusarium tricinatum caused by latent infection of the Chinese locust canker bacteria, and citrus branch cortex and leaf tissue of a variety of latent infection.According to the relevant data reported, Glomerella cingulata) also had the phenomenon of latent infection.In order to understand the latent infection rule of the bacteria in Nanjing, the author conducted a survey on the Cunninghamia lanceolata forests in Wangjiawan and Jiangwangmiao on the northern slope of Nanjing Zhongshanling, Artificial inoculation confirmed that there is latent infection of C. anthracis bacteria now observe the situation as follows: