|Title:||臺灣火鶴花細菌性葉枯病及其病菌對藥劑之感受性||Other Titles:||Anthurium bacterial blight in Taiwan and the sensitivity of the pathogen to agrochemicals||Authors:||許秀惠
|Keywords:||火鶴花;細菌性葉枯病;Xanthomonas axonopodis pv. diffenbachiae;藥劑感受性;anthurium;bacterial blight;Xanthomonas axonopodis pv. dieffenbachiae;agrochemical sensitivity||Issue Date:||Oct-1998||Publisher:||植物保護學會||Journal Volume:||40||Journal Issue:||4||Start page/Pages:||409-417||Source:||植物保護學會會刊||Abstract:||
臺灣栽培之火鶴花於1991年在南投縣埔里火鶴花栽培場首先發現其葉片上呈現黃暈之壞疽型病徵之細菌性葉枯病，次年於南部發現黃化型病徵之葉枯病，隨後該病害逐漸蔓延至臺灣各地。臺灣葉枯病在葉片上之病徵型態頗多，除上述壞疽型及黃化型病徵外，還包括水浸狀斑及同時具水浸狀斑、黃化、壞疽斑等病徵中之二種或三種組合之病徵，且這種組合型病徵其病勢進展較快，也較為常見。由罹病組織分離之細菌經生理生化性質測定，Biolog鑑定系統分析及接種試驗，確定造成臺灣火鶴花葉枯病之病原細菌為Xanthomonas axonopodis pv. diffenbachiae（原名X. campestris pv. dieffenbachiae）。臺灣之葉枯病菌以Biolog系統分析，具有二種碳源利用差異之類別。利用瀘紙圓盤法測定葉枯病菌株對藥劑之感受性，結果顯示含有機硫磺劑及四環黴素之藥劑對此病菌具有抑制作用，但供試75株病原細菌菌株中有68株對鏈黴素及6株對氫氧化銅具有抗性。
Bacterial blight disease on anthurium showing leaf symptoms of necrotic lesions that
surrounded by yellow halo was first found at Puli, Nantou in 1991, and a leaf yellow type of symptoms of the disease was observed in the southern part of Taiwan in the following year. The disease is now spread to many anthurium fields in Taiwan. Many types of symptoms were observed. In addition to the above symptoms, water soaked spots and various combinations of water-soaked spo.t, leaf yellowing and necrotic lesion were frequently observed. The disease with the combination types of symptoms developed more rapidly than the disease with other types of symptoms. The causal organism was identified as Xanthomonas axonopodis pv. dieffenbachiae (formerly, X campestris pv. dieffenbachiae) based on physiological characteristics, Biolog GN Microplate Identification System and plant pathogenecity tests. The Biolog microplate test showed that there were two types of strains differing in utilization of carbon sources in Taiwan. In a screening of the effective bacteriocides by the paper disc diffusion method, dithiocarbamate and tetracycline inhibited the growth of the pathogen. However, among 75 strains of the pathogen tested, 68 were resistant to streptomycin and 6 were resistant to cupric hydroxide.
|Appears in Collections:||植物保護系|
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