土壤溫度對蘿蔔黃葉病的影響
Other Title
Effect of Soil Temperature on Radish Yellow Pathogen
Journal
中國園藝
Journal Volume
33
Journal Issue
1
Pages
16-23
Date Issued
1987-03
Date
1987
Author(s)
羅朝村
孫守恭
Chaur-Tseun Lo
Shou-Kung Sun
Abstract
蘿蔔黃葉病的發生程度，深受環境因子中溫度的影響。根據試驗結果顯示，黃葉病在25±3℃時發生浪爲嚴重，而較高或較低的溫度皆會使病害降低。經進一步探討溫度對病原菌的影響，發現溫度愈低，病原菌的成活率愈高；在24-28℃最適於病原菌的生長。測定胞子發芽結果，雖在水瓊脂(water agar)上，胞子及厚膜胞子最適溫略有差異（前者28℃，後者24℃），但發芽管長度均以28℃最爲適合；土壤厚膜胞子之測定結果亦以28℃爲較適合發芽之溫度。
Disease incidence of radish yellows caused by Fusarium oxysporum f. sp. raphani Kend et Snyder. , was influenced by change of temperature. In our experiments, we found that the optimum temperature for disease development was 25±3℃, and the disease severity was significantly decreased by lower or higher of temperature. The pathogens grow on Czapek's agar at 8-36℃, with optimum at 20-28℃. It was found that survival of the pathogen in soil gave longer period in lower temperature than higher temperature. The optimum temperature (28℃) for germination of conidia and chlamydospore was hardly any different in soil or on water agar, except 24℃ was better for germination of chlamydospore on agar, but 28℃ still was best for germ tube development.
Subjects
蘿蔔黃葉病
溫度
radish yellow
soil temperature
Fusarium oxysporum f. sp. raphani
Publisher
臺灣園藝學會
Type
journal article