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題 名 | Phytophthora Blight of Peace Lily in Taiwan=臺灣白鶴芋疫病 |
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作 者 | 安寶貞; 蔡志濃; | 書刊名 | 植物病理學會刊 |
卷 期 | 9:4 2000.12[民89.12] |
頁 次 | 頁145-150 |
分類號 | 435.43 |
關鍵詞 | 白鶴芋; 疫病; 配對型; 新紀錄; New disease record; Phytophthora parasitica; Mating type; Peace lily; Spathiphyllum kochii; |
語 文 | 英文(English) |
中文摘要 | 在臺灣,白鶴芋罹患疫病首次於1992年在嘉義發現,病原菌為Phytophthora parasitica。該菌危害白鶴芋時,造成葉枯與根腐,嚴重時導致全株死亡。自1992年至1997年,於臺北、南投、彰化、嘉義、臺南等地之七處花園中共分離的到27菌株,包括19株A1與8株A2,經鑑定均為標準型的P. parasitica。菌絲塊經過3-8年不同時間於24℃下保存於無菌水中貯藏,存活的16株A1菌株中,有8株的配對型改變成A2,2株變成A1A2,只有6菌株仍然為A1配對型。然而,存活的8株A2菌株均仍然為A2,配對型未曾改變。白鶴芋幼苗在接種分離得到的P. parasitica疫病菌遊走子懸浮液(105-6 zoospores/ml)後,都出現與田間自然發病時相同的病徵。由於白鶴芋幼苗十分罹病,在接種一個月後,80%以上之植株均會死亡,而且相同的疫病菌均可自發病組織回分得到。在病原性測定試驗中,自白鶴芋分離的P. parasitica亦同時可感染火鶴花(Anthurium andreanum)、心葉蔓綠絨(Philodendron scandens subsp. Oxycardium)、及黃金葛(Epiprenmum aureum)等三種天南星科觀賞植物,反之亦然。但該菌不危害夏雪黛粉葉(Dieffenbachia amoena)。白鶴芋疫病為首次在臺灣報導。 |
英文摘要 | Phytophthora parasitica (= P. nicotianae) has been detected from the diseased tissues of peace lily (Spathiplyllum kochii) since 1992 in Taiwan. The pathogen caused severe leaf blight, root rot and death of the whole plants of the ornamental plant in many fields. A total of 19 A1 and 8A2 isolates of P. parasitica were obtained from 7 fileds distributing in Taipei, Nantow, Changhua, Chiayi and Tainan. After stored for 38 years, 8 of 16 A1 isolates changed to A2 type and 2 to A1 A2 type. However, none of A2 isolates changed. Disease symptoms similar to appearing in the fields were reproduced when plantlets of peace lily were inoculated with zoospore suspension of P. parasitica in pathogenicity test. Three-month-old plantlets of peace lily showed high susceptibility to the pathogen and more than 80% inoculated plantings were killed within one month. Phytophhtora parasitica was reisolated from all artificially infected tissues. The peace lily isolates of P. parasitica were pathogenic to three of four members of aroids, including Anthurium andreanum, Epiprenmum aureum, philodendron scandens subsp. Oxycardium, which have been record as hosts of the pathogen in Taiwan and vice versa. The pathogen did not caused disease symptoms on Dieffenbachia amoena. Phytophthora disease of peace lily is reported fore the first time in Taiwan. |
本系統中英文摘要資訊取自各篇刊載內容。