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題 名 | 墊銹菌之發生與分佈及其對綠竹與麻竹葉部性狀之影響 |
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作 者 | 李明仁; | 書刊名 | 嘉義農專學報 |
卷 期 | 41 1995.05[民84.05] |
頁 次 | 頁1-21 |
分類號 | 377.2124 |
關鍵詞 | 綠竹; 麻竹; 墊銹菌; X-光微量元素分析; 光合作用; Bambusa oldhami; Dasturella divina; Dendrocalamus latiflorus; X-ray microanalysis; Photosynthesis; |
語 文 | 中文(Chinese) |
中文摘要 | 綠竹及麻竹主要栽培於南投、雲林、嘉義、臺南、高雄、及屏東平地至 海拔500公尺的區域,能生產品質優良的竹筍及造紙原料,走台灣重要之經濟竹 種。然而近年來墊�袢�(Dasturella divina Munro)大量發生,導致嚴重的綠竹及麻竹 葉�蚽f。本研究旨在調查本菌之發生與分佈之情形;利用掃描式電子顯微鏡技術 觀察墊�袢艉壯庥A;以能量分散X-光微量元素分析技術,分析竹葉組織中微量元 素之含量比與分佈;並以光合作用測定儀測定竹葉之光合作用速率。研究結果顯 示,墊�袢艀b夏秋兩季於竹葉背面形成夏孢子堆,大量產生夏孢子,尤以晚秋為 最。本菌之分佈範圍遍佈臺灣全省。X-光微量元素分析結果顯示,綠竹與麻竹罹 病竹葉之海綿組織與柵狀組織中矽元素之含量比健康竹葉者為高;而其含鉀元素 之含量則較健康竹葉者為低。1994年11及12月健康綠竹及麻竹竹葉之平均光合作 用速率分別為18.35μmole CO��.m��.s-�薑�19.61μmole CO��.m�鴃Ds-�薄A而罹病 綠竹及麻竹竹葉之平均光合作用速率分別為2.60μmole CO��.m��.S-�嶀�1.94μ mole CO��.m��.s-�薄C此一結果證明墊�袢蒍}壞竹葉組織,影響竹葉組織中元素 之分佈,並嚴重降低竹葉之光合作用速率。 |
英文摘要 | Green bamboo (Bambusa oldhami Munro) and Ma bamboo(Dendrocalamus latiflorus Munro), cultured over an area from low elevationto 500 m in Nantou, Yunlin, Chiayi, Tainan, Kaohsiung, and Pingtongcounties in Taiwan, are important economic bamboo species for producinggood quality bamboo (shoot and pulp materials. However, the rust fungus,Dasturella divina, has spread over bamboo plantations, and caused seriousdamage to bamboo leaves. In this study, rust distribution was surveyed; itsmor- phology was observed with scanning electron microscope ; the energy-dis- persive X-ray microanalysis was applied to detect the element distribution intissues of bamboo leaves; and the rate of photosynthesis was measured withportable photosynthesis system. The results revealed that in summer and fall, especially late fall, thereare lots of uredinia appearing on lower leaf surface, and subsequently producing plenty of urediniospores. The rust distributed throughout the island.Results from X-ray microanalysis showed that contents of silicon and potassium was respectively higher and lower in tissues of diseased leaves incomparison to healthy ones. In November and December 1994, the averagephotosynthesis rates of healthy leaves of green bamboo and Ma bamboo were 18.35μ mole CO��.m��.s-��, and 19.61μ mole CO�� m��.s-�臆espectively. How ever, in November and December 1994, the average photosynthesis rates ofdiseased leaves of green bamboo and Ma bamboo were 2.60μ mole CO��.m��. s-��, and 1.94μ mole CO��.m��.s-�� respectively. These results demonstrated that Dasturella divina destroyed tissues ofbamboo leaves, changed the distribution of elements in leaf tissues, and thusseriously decreased the rates of photosynthesis.Key words : Bambusa oldhami, Dasturella divina, Dendrocalamus latiflorus,X-ray microanalysis, photosynthesis |
本系統中英文摘要資訊取自各篇刊載內容。