- Standardsignatur6896
- TitelEtiological and Pathological Studies on the Resinous Stem canker of Hinoki cypress, Chamaecyparis obtusa, et Zucc. I. Detection, Identification and Pathogenicity of the Causal Fungus
- VerfasserTakao Kobayashi (*)Hiroko Hayashi (*)Takanori Kubono (*)Masanobu TabataShin Ichiro Ito
- KörperschaftForesty and Fisheries Ibaraki. Forestry and Forest Products Research Institute Ministry of Agriculture
- Erscheinungsjahr1990
- SeitenS. 51-94
- Illustrationen20 Abb., 8 Tab., zahlr. Lit. Ang.
- MaterialUnselbständiges Werk
- Datensatznummer200062319
- QuelleBulletin of the Forestry and Forest Products Research Institute 1990 ; (357), S. 51-94
- AbstractEtiological studies on resinous stem canker of Chamaecyaris obtusa SIEB. et ZUCC., which has long been wellknown amoung Japanese foresters since the beginning of 20th century but whose cause is unknown, were carried out for about 10 years. Three fungi, Crytosporiopsis, Sarea and Pestalotiopsis, were isolated from the stem lesions of the disease. Fruit bodies of Pezicula and Sarea were detected on stem lesions, dead twigs and the bark of thinned trees. Repeated artifical inoculation tests revealed that only Crytosporiopsis and Pezicula could develop similar lesions to those observed on naturally infected trees. Moreover, it was proven from monoascospore isolation that the Pezicula was the perfect state of Crytosporiopsis. From these facts it was concluded that the Pezicula and its anamorph Crytosporiopsis were the causal fungi of the resinous stem canker of hinoki cypress, Chamaecyparis obtusa SIEB. et ZUCC. The present fungi were identified as Pezicula livida (BERK. et BR.) REHM (=Cryptosporiopsis abietina PETRAK) from the detailed investigation of Pezicula and Cryptosporiopsis which were collected and isolated from the resinous stem canker lesions. The disease was widely recorded from Kyushu and Honshu Is. of Japan covering with or without snow cover. Twenty eight forests out of 34 diseased forests, ranging from 6 to 80 years old, had more than half of the trees suffering from the disease. The lesions mainly distributed on the lower part of stems lower than 3 m which provides commercial log. Half of the lesions investigated were 10 - 40 cm in length and longest lesion was 4 m.
- SchlagwörterChamaecyparis obtusa, Krebskrankheit, Ursache, Krebserreger, Pezicula livida, Cryptosporiopsis abietina
- Klassifikation416.16 (Welken, Absterben)
443.3 (Krankheiten in späteren Wachstumsstadien)
174.7 (Coniferae [Siehe Anhang D])
[520] (Japan)
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