翻訳と辞書 Words near each other ・ Heterixalus madagascariensis ・ Heterixalus punctatus ・ Heterixalus rutenbergi ・ Heterixalus tricolor ・ Heterixalus variabilis ・ Hetero (disambiguation) ・ Hetero Drugs ・ Hetero-Genesys Laboratory ・ Heteroatom ・ Heteroatom-promoted lateral lithiation ・ Heteroazeotrope ・ Heterobapta ・ Heterobasidiomycetes ・ Heterobasidion ・ Heterobasidion annosum ・ Heterobasidion irregulare ・ Heterobasidion occidentale ・ Heterobathmia diffusa ・ Heterobathmia pseuderiocrania ・ Heterobathmia valvifer ・ Heterobathmioidea ・ Heteroblasty (botany) ・ Heterobostrychus ・ Heterobranchia ・ Heterobranchus ・ Heterobranchus bidorsalis ・ Heterobranchus boulengeri ・ Heterocallia ・ Heterocallia truncaria ・ Heterocampa Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Heterobasidion irregulare ： ウィキペディア英語版 Heterobasidion irregulare ''Heterobasidion irregulare'' is a tree root rotting pathogenic fungus that belongs to the genus ''Heterobasidion'', which includes important pathogens of conifers and other woody plants. It has a wide host and geographic range throughout North America and causes considerable economic damage in pine plantations in the United States. This fungus is also a serious worry in eastern Canada. Due to the ecology, disease type, host range/preference, interfertility group, and genetic information, ''H. irregulare'' (formerly known as ''Heterobasidion annosum'' P ISG) was designated a new species and distinguished from ''Heterobasidion occidentale'' (formerly known as ''Heterobasidion annosum'' S ISG).〔 ==Hosts, Symptoms and Signs== Many woody plant species have been reported as hosts for ''H. irregulare''. Hosts consist of pines and some other conifers and hardwoods, including ponderosa pine (''Pinus ponderosa''),〔 shortleaf pine (''Pinus echinata''), red pine (''Pinus resinosa''),〔 incense-cedar (''Calocedrus decurrens''), western juniper (''Juniperus occidentalis''), and Manzanita (''Arctostaphylos'' spp.).〔 ''Heterobasidion irregulare'' causes both above and below-ground symptoms. Above-ground symptoms of infected trees consist of reduced height growth, patches of dead and declining trees, wind-thrown trees, reduced shoot and diameter growth, and resin-soaking at the root collar. Additionally, the crown may become thin and foliage (leaves or needles) becomes chlorotic. The characteristic symptom of most tree root disease, including this type, is a disease center. This occurs when the fungus has infected one tree and then spreads through the roots to other trees and kills them too. This creates a pattern of old dead trees in the center of the pocket and progressively newer dead, chlorotic, then healthy trees, usually in a circular area. Below-ground symptoms of ''H. irregulare'' include excessive pitch production, stringy, white root decay, and root lesions. Signs include the formation of white mycelia between bark scales followed by conks (fruit bodies) that usually form in the duff layer at the base of the tree or stump.〔〔〔 The fruit bodies can also form as "foam" on the ground rising from roots under the surface. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Heterobasidion irregulare」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.