|Title:||柑桔鱗砧病在臺灣兩種主要甜橙品種之發生與為害||Other Titles:||Citrus Exocortis in Liucheng and Valencia Orange in Taiwan||Authors:||黃秋雄
|Issue Date:||8-Sep-1977||Publisher:||農業試驗所||Journal Volume:||26||Journal Issue:||3||Start page/Pages:||251-254||Source:||中華農業研究||Abstract:||
The purpose of this investigation is to prove the occurrence of citrus exocortis viroid (CEV) disease in Liucheng and Valencia orange in Taiwan. Citrus seedlings of Arizona 861 selection of “Etrog” citron were used as indicator plant in the experiment. Budwoods from 29 orchards, including 17 Liucheng, 9 Valencia and 3 Ponkan, were collected for indexing the existence of the disease.
Results indicated that exocortis existed in all sweet orange but not in Ponkan orchards. Field observation found that the disease showed typical symptoms on 7-8 year old infected trees grafted on Rangpur lime rootstock and caused great losses and severe stunting. Contrary, citrus trees on Sunki rootstock are symptomless carrier and grow vigorously. The incidence of the exocortis and the widespread use of Rangpur lime rootstock suggested that the original trees of both Liucheng and Valencia orange be infected with exocortis. The disease may become important and threaten the citrus industry in Taiwan.
|Appears in Collections:||1.台灣農業研究(1950～迄今)|
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