New Diseases and Records of Flowering Potted Plants Caused by Phytophthora species in Taiwan

台灣盆花植物疫病之新紀錄

安寶貞(Pao-Jen Ann)

《植物病理學會刊》 9卷1期 (2000/03) Pp. 1-10

https://doi.org/10.6649/PPB.200003_9(1).0001

摘要

自1989~1999年調查台卉灣卉作物疫病時，發有十六種未曾正式報告之盆花疫病，分述如下。一種非標準型的Phytpyhthora capsici引起西洋杜鵑萎凋與死亡．P.citrophthora感染火鵗與花日日日春全株，及仙克來的根系與莖基部。ｐ.parasitica 危害七盆花植物，包括單葯花（全株萎凋腐敗九重葛（葉片與花器腐敗、夏威夷朱槿（根腐）、炮仗花（葉片與花器腐敗）、沙漠玫瑰（幼嫩組織與莖部腐敗）、天鵝絨全株萎凋與腐）及口紅花（萎凋）。而P. palmivora則造成薑荷花花器腐敗與矮牽牛萎凋。此外，非標準型的P. cinnamomi自四季秋海棠的腐敗莖基，P.citriola從台灣一葉蘭的罹病葉片，及P.cryptogea自香雪的罹病根系組織中分離得到。這些寄主植物在接種個別分離得的疫病菌遊走子懸浮液後，都出現與田間自然發病時相同的病徵，而且相同的疫病菌亦均自發組織回分得到。這些新病害中，P.capsici危害西洋杜鵑、P.cinnamomi危害秋海棠、P.citricrla危害台灣一葉蘭、P.citrophthora危害火鶴花、p.cryptogea危害香雪球，P.parasitsica 危害口紅花、天鵝絨、炮仗花及沙漠玫瑰、以及P.palmivor危害薑荷花在世界其他各地均當未發表過。

關鍵字

疫病 ； 疫病菌 ； 新紀錄 ； 盆花植物

並列摘要

Phytophthora diseases of flowering potted plants were investigated from 1989 to 1999. A total of 16 new diseases, which have not been formally reported in Taiwan, were found and described in the study. An atypical type of Phytophthora capsici was found to cause wilt and death of azalea. P. citrophthora attacked was detected from the infected diseased tissues of seven species of plants including Aphelandra sp. (whole plant wilt), bougainvillea (leaf and flower blight), hibiscus (root rot), flame vine (leaf and flower blight), desert rose (young tissue and stem blight), chincherinchees(wilt and blight of whole plants), and Aeschynanthus sp. (wilt). While P. palmivora caused flower blight of curcuma and wilt of garden petunia. Besides, P. cinnamomi was isolated from the rotted basal stem tissues of begonia, P. citricola from the blighted leaves of Taiwan pleione, and P. cryptogea from the diseased root tissues of sweet alyssum. Disease symptoms similar to those occurring in natural conditions were reproduced when each host was inoculated with zoospore suspension of their respective isolates of Phytophthora species in pathogenicity. Same species of Phytophthora was reisolated from all artificially infected tissues. Among these new diseases, P. capsici on azalea, P. cinnamomi on begonia, P. citricola on Taiwan pleione, P. citrophthora on anthurium, P. cryptogea on sweet alyssum, P. parasitica on Aeschynanthus sp., chincherinchees, flame vine and desert rose, and P. palmivora on curcuma have not been described in any other places previously.

並列關鍵字

New disease records ； Phytophthora capsici ； P. cinnamomi ； P. citrophthora ； P. citricola ； P. cryptogea ； P. parasitica ； P. palmivora ； Flowering potted plants ； Taiwan