- 期刊
Black Leaf Mold Development on Lycopersicon spp. and Associated Yield Losses Black Leaf Mold Development on Lycopersicon spp. and Associated Yield Losses Black Leaf Mold Development on Lycopersicon spp. and Associated Yield Losses
番茄黑黴病病勢之進展與產量損失之關係
摘要
最近幾年來，由Pseudocercospora fuligena引起之番茄黑黴病已經對台灣地區番茄生產造成嚴重之威脅。本研究乃是利用十二種對黑黴病具不同程度抗性之番茄品系探討黑黴病病勢進展對產量之影響。結果發現屬於Lycopersicon esculentum之品種及品系之病勢進展比L. hirsutum、L. pimpinellifolium及L. glandulosum之品系較為快速，而且L. hirsutum之品系得到病勢進展曲線下面積值及每平方公分葉面積所產生之分生胞子量均顯著低於其他品系。因此，每平方公分葉面積所產生之分生胞子量與病勢進展曲線下面積值呈現正相關。黑黴病之危害可使所有L. esculentum供試品系呈現顯著地減產﹐但未對L. hirsutum、L. pimpinellifolium及L. glandulosum之品系造成顯著減產。本研究結果顯示番茄產量損失百分率與黑黴病之病勢進展曲線下面積值及每單位葉面積產生分生胞子量呈正相關之關係。
並列摘要
Black leaf mold of tomato, caused by Pseudocercospora fuligena, has become a serious threat to tomato production in Taiwan in recent years. In this study, black leaf mold development and its effect on yield were studied in 12 Lycopersicon entries representing a range of resistance levels. Disease developed more rapidly on cultivars and lines of Lycopersicon esculentum than L. hirsutum, L. pimpinellifolium, and L. glandulosum accessions which were included in this study. The L. hirsutum entries received significantly lower area under disease progress curve (AUDPC) values and produced significantly fewer conidia per cm^2 of leaf area than the other entries. There was a significant positive correlation between the conidia produced per cm^2 of leaf area and AUDPC values. Black leaf mold caused a significant reduction in the yield of all L. esculentum entries, but not the L. hirsutum, L. pimpinellifolium and L. glandulosum accessions. There was also a significant positive correlation between the percentage of yield loss and both measurement parameters for black leaf mold, i.e. AUDPC values and the number of conidia produced per unit of leaf area.
延伸閱讀
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