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來源資料
頁籤選單縮合
題 名 | Feeding Stimulants in Solanum Viarum Dunal for Tomato Fruit Borer (Helicoverpa Armigera Hübner)=野生茄子(Solanum Viarum)刺激番茄夜蛾取食之物質 |
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作 者 | Strinivasan, R.; Talekar N. S.; Uthamasamy S.; | 書刊名 | 臺灣昆蟲 |
卷 期 | 25:2 民94.06 |
頁 次 | 頁95-102 |
分類號 | 433.3 |
關鍵詞 | 番茄夜娥; 取食刺激物質; 幼蟲生長; Solanum viarum; Tomato fruit borer; Feeding stimulant; Larvae growth; |
語 文 | 英文(English) |
中文摘要 | Solanum viarum是野生茄科作物之一,但卻也遭受番茄夜蛾嚴重危害,S. viarum對番茄夜蛾雌蟲具強烈誘引產卵能力,但無論是初齡或其他較大幼蟲最終皆死亡,無法完成幼蟲發育。因此本試驗之目的將確認S. viarum是否含有取食刺激物質,在試驗中,我們利用純米人工飼料為對照組,並利用純米人工飼料分別加入S. viarum葉片汁液水溶液、S. viarum蒸餾液、以己烷萃取S. viarum蒸餾液後之溶劑溶液、以己烷萃取S. viarum蒸餾液後之水溶性溶液及番茄葉片汁液水溶液等五種人工飼料,餵食番茄夜蛾幼蟲。將S. viarum蒸餾液經己烷萃取,再分離成溶劑溶液及水溶性溶液兩部分,是為了瞭解是否有刺激取食物質存在於水性溶液或溶劑溶液中。結果顯示,所有幼蟲皆只取食極少的純米人工飼料,且60%的幼蟲在一星期內死亡,若將S. viarum葉片汁液水溶液加入人工飼料中,則只有20%幼蟲會取食且存活至四星期,但若加入S. viarum之蒸餾液,則幼蟲開始有取食行為,而含蒸餾液經己烷萃取後之溶劑溶液之人工飼料,可提供幼蟲發育,且幼蟲期平均為25.6天、化蛹率為70%、蛹平均重約0.139克,此結果與經己烷萃取S. viarum蒸餾液之水溶性溶液作比較,有明顯差異,但是成蟲羽化率只有20%。 |
英文摘要 | Solanum viarum, a wild solanaceous plant, was heavily infested by tomato fruit borer (TFB), Helicoverpa armigera. S. viarum was consistently preferred by TFB over its natural host, tomato. Hence, we aimed to exploit the presence of feeding stimulants in S. viarum. Pure rice flour diet was prepared with an aqueous leaf extract of S. viarum, steam distillate (SD) of S. viarum, hexane fraction of SD of S. viarum, water fraction of SD of S. viarum and aqueous leaf extract of tomato. The purpose for halving the SD into a hexane fraction and water fraction was to determine whether the feeding stimulants, if any, are hydrophilic or lipophilic. In our experiments, there was very little larval feeding on the pure rice flour diet (check) and 60% died within a week. On the diet fortified with S. viarum aqueous extract, only 20% fed and survived up to four weeks. The larval duration was 25.60 days on diet fortified with the hexane fraction of SD. The percent pupation (70.00) and pupal weight (0.139 g) were significantly different on the diet fortified with the water fraction of SD. The adult emergence was only 20% where the larvae were fed with S. viarum extracts. |
本系統中英文摘要資訊取自各篇刊載內容。