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油茶槲寄生病

Oiltea Disease Caused by Dwarf Mistletoe

摘要


西元一九八一年,南投縣信義箱同富村一帶之油茶遭受槲寄生危害後,植株生長勢呈現衰弱的現象。槲寄生的學名是Bifaria opuntia;屬於矮小顯花植物,可結種子,種子小,有黏性,被風吹至其他寄主上,在適當條件下,可發芽,但無根,有器盤及吸器,侵入寄主表皮內,吸取植物之養分,導致寄主植物生育不良,甚至死亡。一旦發現油茶樹上有槲寄生之植株,應立即剪除,即可達到防治效果。

關鍵字

油茶 槲寄生

並列摘要


Oiltea trees (Camelia oleifera Abel) are cultivated by Taiwanese farmers around the hill side in Nanto Shiann. Those oiltea trees affected by dwarf mistletoe showed leaves yellowing and growth abnormal. The dwarf mistletoe with a very broad host range was named Bifaria opuntia by Prof. Chao of National Taiwan University, however oiltea was its new host found by the author. This parasitic mistletoe produces small viscid seeds which can be spreaded by wind also by birds to other susceptible host branches. Under favorable conditions, the seeds germinate to produce germ tube which penetrate into the epidermis of the host plants such as oiltea, and sucking nutrient of oiltea for the growth of the mistletoes. Finally, the leaves of the infected oiltea tree show yellowing and growth abnormal.

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