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題 名 | 臺灣南北地區柑橘黑點病發生之差異 |
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作 者 | 蔡竹固; | 書刊名 | 嘉義農專學報 |
卷 期 | 26 1991.06[民80.06] |
頁 次 | 頁265-274 |
分類號 | 435.33 |
關鍵詞 | 南北地區; 柑橘; 黑點病; 臺灣; |
語 文 | 中文(Chinese) |
中文摘要 | 本試驗在於了解本省南部柑桔園黑點病發生較北部柑桔園稀少的原 因。根據調查南部柑橘園,僅在雲林縣古坑鄉柳橙上嚴重發生,發病率為40,椪 柑的發病率為25。嘉義縣竹崎鄉、臺南縣白河鎮等僅屬零星發生。南北地區柑桔 枝條及枯枝表面分離之微生物,雖然有所不同,但無法明確比較出活枝和枯枝、 南北地區間微生物相的不同。南北地區分離的真菌3菌株表現有拮抗現象,對於 黑點病菌菌絲生長有阻止。但與南北二地所分離微生物種類間並無絕對之差異。 南北地區真菌8菌株之培養濾液,對於黑點病菌發芽及發芽管伸長有抑制現象。 自南北柑橘植株葉片抽出物對於黑點病菌孢子發芽,不論柑橘種類和南北地區, 其抽出物原液皆對孢子發芽及發芽管伸長有抑制作用。綜合試驗結果及文獻資 料,推論目前南部發病稀少的原因,乃係微氣候不利於本病接種源的產生;惟此 微氣候因子有賴進一步探討。 |
英文摘要 | Citrus melanose occurs more serious in northern Taiwan than in other area.In order to understand why melanose scarcely occurs throughout the southernTaiwan, this study is proposed. Microorganisms on the surface of citrus wereisolated by dilution plate method with PDA after shaking twigs within sterilizedwater. On PDA plate at 25℃, mycelial growth of Diaporthe citri was inhibitedby 3 of 34 isolates of fungi. Conidia germination of D. citri inhibited in addingculture filtrates of 8 isolates of fungi to spore suspension. However, both the isolates from northern and southern citrus orchards have the same inhibition effectto D. citri According to these results and reference cited, the most importantfactor influencing the difference of disease incidence between the northern andsouthern Taiwan is the effect of microclimate on the inoculum formation of citrusmelanose. |
本系統中英文摘要資訊取自各篇刊載內容。