共查询到15条相似文献,搜索用时 484 毫秒
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长白山林区鱼鳞云杉上一种新干基白腐病 总被引:1,自引:0,他引:1
这种新干基白腐病的病原菌为绒毛昂氏孔菌Onnia fomentosa。该病主要发生于成熟林分,造成干基特别是根部腐朽。被侵染树木极易风折或风倒而死亡。根据中国的材料对该病的病原菌形态特征进行了详细描述,并与北美及欧洲的标本进行了比较研究。 相似文献
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长白山桦树上一种新腐朽病害 总被引:6,自引:0,他引:6
本文报道了我国长白山林区桦树上一种新腐朽病害,其病原菌为斜生纤孔菌Inonotusobliquus。该病主要发生在海拔较高的成熟桦树上,主要特征是在树干上形成黑色肿瘤,造成心材白色腐朽,受害树极易风析,后期全株死亡,对病原菌的宏观,显微结构及病害的症状进行了详细描述,并与欧洲的标本进行了比较。 相似文献
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报道了中国小兴安岭云杉树上一种新干基白腐病,其病原菌为鳞片昂氏多孔菌Onnia leporina(Fr.)H.Jahn。该病主要发生在成熟林分,造成受害木干基白腐,被侵染树木极易风折或风倒而死亡。根据中国的材料对该病病菌进行了宏观和微观的详细描述,并与欧洲的材料进行了对比。 相似文献
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《Scandinavian Journal of Forest Research》2012,27(2):210-217
The incidence of butt rot in two consecutive rotations of Norway spruce [Picea abies (L.) Karst.] in 28 permanent sample plots at four different sites in Denmark was evaluated. Incidence of butt rot was estimated by visual examination of stumps at final felling of the previous rotation and by examination of bore cores taken at the butt from a random sample of trees before first thinning of the subsequent rotation. There was no correlation between the incidence of butt rot at final felling of the previous rotation of Norway spruce and the incidence of butt rot at first thinning of the subsequent rotation of Norway spruce. The incidence of butt rot at final felling was between 19 and 100%, and at first thinning between 0 and 20%. The S-form of Heterobasidion annosum (Fr.) Bref. was the most commonly found decay-causing organism at all sites. Root systems of 28 trees without decay at stump height in the present rotation were excavated to estimate the incidence of root rot. Heterobasidion annosum was found in only one root. Resinicium bicolor (Alb. & Schw. ex Fr.) Parm. was found in 25% of the excavated root systems. The result of the study shows that the incidence of butt rot at first thinning of Norway spruce is not necessarily higher on sites where the previous rotation was heavily infected than on sites where infection in the previous rotation was low. 相似文献
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R. Siepmann 《Forest Pathology》1979,9(2):70-78
Stem and root rot of Douglas fir, Pseudotsuga menziesii (Mirb.) Franco. In 20 year old Douglas fir most of the butt rot was caused by Fomes annosus. Stem decay was central as well as eccentric reaching the sap wood in either case. The side roots of 20 year old Douglas fir were compared with those of a 40 year old stand with butt rot. In individual trees with decay there were less roots with Fomes annosus decay in the younger stand. Calocera viscosa was more abundant in the older stand. Soil conditions which might have favoured root rot in the young stand are discussed. 相似文献
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Fomes annosus (Fr.) Cke. and other Root-rotting Fungi in Conifers on ex-Hardwood Sites 总被引:3,自引:0,他引:3
The development of root rot and butt rot caused by Fomes annosusin conifer crops planted on ex-hardwood ground is slower thanthat in second-rotation conifer plantations. This is apparentlydue to competition from other fungi, notably Artnillaria mellea.Excavations on ex-hardwood sites showed that F. annosus waspresent in conifer thinning stumps, and that transference ofinfection occurred, causing butt rot. The investigations confirmedthe need for stump protection of all conifer crops planted onex-hardwood sites. Short accounts are given of the activityof A. mellea and Polyporus schweinitzii, the other two importantroot-rotting fungi on these sites. 相似文献
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Masanobu Tabata Takashi Kato Masatoshi Ohkubo Yasuhisa Abe Shuichiro Yoshinaga 《Journal of Forest Research》2002,7(2):105-112
The rot ofChamaecyparis obtusa (hinoki) trees was studied in the northern part of Kagawa Prefecture, Japan. Among 158 hinoki examined, butt rot was found
in 28.6, 58.3, and 100% of trees in the 29, 30, and 34-year-old stands, respectively. All trees with butt rot, and 11 trees
without it had rotted roots. Thirteen hinoki were peeled byCervus nippon (sika deer) and all of them were infected with butt rot. The maximum height of rot in deer-damaged trees was 2.6 m from the
ground level, but was 1.9 m in undamaged trees. About eighty-two percent of rotted trees showed rotted areas of less than
40 cm2 on the cross section of stems at the ground level. White mycelia and black flecks sometimes appeared in the rotted wood.
Basidiocarps of polyporaceous fungus were often found on felled logs and rotted stumps of hinoki and identified asPerenniporia subacida. Basidiomycetous fungus was isolated frequently from rotted wood of roots and stems, and determined to beP. subacida by comparative study on cultural characteristics. An inoculation experiment and wood-decay test proved that the fungus was
the cause of the rot of hinoki. Few absorbing roots of living trees were found in the clayey subsurface soil of the high dry
bulk density and the less soil aeration. Some absorbing roots had root rot and the rot spread from the base of the absorbing
root to the central part of the woody root. This is the first report on the rot of hinoki caused byP. subacida in Japan. 相似文献