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杉木炭疽病的病原物是一种毛盘孢属的真菌Colletotrichum sp·。病死针叶在实验室中保湿培养,产生一种子囊菌Glomerella sp·其形态同Glomerella cingulata(stonem)S.et S.很相似。通过子囊孢子单孢分离和接种试验,证明Glomerella sp·是杉木炭疽病菌Colletotrichum sp·的有性世代。 用杉木炭疽病菌、苹果炭疽病菌和油茶炭疽病菌(后两者的有性世代都是Glomerelta cingulata)进行交互接种都能致病,但致病力有差异。杉木炭疽病菌的致病性同苹果炭疽病菌较为接近。 结果表明,杉木炭疽病菌是Glomerella cingulata的一个菌系,杉木是这一真菌的第一次报道的新寄主。 杉木炭疽病的病原是毛盘孢属的一种真菌(Colletotrichum sp·),曾进行反复的接种试验得到证明。在天然条件下,杉木病死针叶上产生许多分生孢子盘,其有性世代则未曾发现。 将林间发病枯死的杉木针叶,或人工接种发病枯死的针叶放在保湿培养皿中,在白天室温约15℃左右的室内培养,约经15天左右即产生子囊壳。20天后子囊壳逐渐成熟,30天左右即可见子囊壳孔口有蜜色子囊孢子团涌出。根据其形态,应是丛壳菌属之一种(Glomerella sp.) 我们在1975年对这两种真菌的关系和分类地位作了初步研究。
The pathogen of Chinese fir anthracnose is a Colletotrichum sp. The diseased needles are moisturized and cultured in the laboratory to produce an ascomycete Glomerella sp whose morphology is similar to that of Glomerella cingulata (stonem) S. et S. Through the ascospore isolation and inoculation test, Glomerella sp. Was proved to be the sexual generation of Colletotrichum sp. Inoculation with Colletotrichum gloeosporioides, Colletotrichum gloeosporioides, and Colletotrichum gloeosporioides (both sexual generations of Glomerelta cingulata) can cause disease but differ in pathogenicity. The pathogenicity of C. anthracis is similar to that of apple anthracnose. The results show that Fungi is a bacterial strain of Glomerella cingulata, and Cunninghamia lanceolata is the first new host reported for this fungus. The pathogen of Cunninghamia lanceolata is a fungus of the genusCercosporidium (Colletotrichum sp.), Which has been demonstrated by repeated inoculation experiments. Under natural conditions, many conidiophores were found on the diseased needle of Cunninghamia lanceolata, and their sexual generation was not found. In the forest, dead needles of Chinese fir needles or artificial inoculation dead needles placed in moist petri dishes, room temperature during the day at about 15 ℃ indoor culture, about 15 days to produce ascus shell. 20 days after the ascicle shell gradually mature, about 30 days can be seen as the ascospore hole with honey ascospore gush. According to its morphology, it should be a Glomerella sp. We conducted a preliminary study of the relationship and taxonomic status of these two fungi in 1975.