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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Bacterial blight of cassava ： ウィキペディア英語版 Bacterial blight of cassava ''Xanthomonas axonopodis pv. manihotis'' is the pathogen that causes bacterial blight of cassava. Originally discovered in Brazil in 1912, the disease has followed cultivation of cassava across the world.〔http://www.apsnet.org/publications/PlantDisease/BackIssues/Documents/1986Articles/PlantDisease70n12_1089.PDF〕 Among diseases which afflict cassava worldwide, bacterial blight causes the largest losses in terms of yield. == Hosts and symptoms == ''Xanthomonas axonopodis pv. manihotis'' is capable of infecting most members of the plant genus ''Manihot''.〔 Consisting of about 100 species, the most economically significant species is easily the widely cultivated woody shrub, ''Manihot esculenta'', known colloquially as the cassava plant.〔http://www.ars-grin.gov/cgi-bin/npgs/html/genus.pl?7234〕 In cassava, symptoms vary in a manner that is unique to this pathogen. Symptoms include blight, wilting, dieback, and vascular necrosis. A more diagnostic symptom visible in cassava with ''X. axonopodis'' infection are angular necrotic spotting of the leaves—often with a chlorotic ring encircling the spots. These spots begin as distinguishable moist, brown lesions normally restricted to the bottom of the plant until they enlarge and coalesce—often killing the entire leaf. A further diagnostic symptom often embodies itself as pools of gum exudate along wounds and leaf cross veins. It begins as a sappy golden liquid and hardens to form an amber colored deposit.〔 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「Bacterial blight of cassava」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.