Effect of Peels of Lemon, Orange, and Grapefruit against Meloidogyne incognita

新鮮之檸檬皮、橘子皮、及葡萄柚皮之抽出液對Meloidogyne incognita之二齡幼蟲有顯著麻痺作用，但致死效果很低。將果皮打成漿狀後貯存於冰箱一星期可大幅提升其抽出液之殺線蟲效果。貯存後之檸檬、橘子、及葡萄柚皮漿之抽出液的殺線蟲效果分別爲90.8%、93.5%及85.0%。實驗數據顯示檸檬皮、橘子皮、及葡萄柚皮所含之精油可能在貯存期間溶解至抽出液中。貯存後之檸檬、橘子、及葡萄柚皮漿之抽出液對卵塊孵化之抑制率分別爲85.7%、91.0%及78.3%。將卵塊自抽出液中移到蒸餾水後，卵可繼續孵化，但總孵化率仍較對照組低。M. incognita對綠豆苗根部之侵入顯著受到貯存後之檸檬、橘子、及葡萄抽皮漿抽出液之抑制。本研究結果可供有機農業用於對線蟲之防治，並且有助於果汁製造業廢棄物之循環利用及颱風季節柑桔園落果之再利用。

關鍵字

檸檬皮；橘子皮；葡萄柚皮；抽出液；殺線蟲；孵化； Meloidogyne

並列摘要

The extracts of fresh peels of lemon, orange, and grapefruit showed significant nematostatic effect against M. incognita second stage juveniles after 48 h treatment. The nemticidal activity was very low in all the extracts of fresh peels but was greatly enhanced in the extracts of stored pulpified peels with 90.8%, 93.5%, and 85.0% mortality of nematodes for lemon, orange, and grapefruit, respectively. The data indicated the possibility of essential oils from the citrus peels might have released in the extracts during storage of the pulpified peels. The egg hatch inhibition of the extracts from stored pulpified peels was 85.7%, 91.0% and 78.3% for lemon, orange, and grapefruit, respectively. The reversibility tests revealed that the effect of extracts on the hatch of eggs was not permanent. The hatching partially resumed after the removal of the extracts but was still significantly lower than the control. The infection of M. incognita second-stage juveniles on mung bean roots was significantly inhibited ht the extracts of the refrigerator stored pulpified peels of lemon, orange, and grapefruit. The findings provide an alternative to chemical nematicides for organic farming and help the disposal of citrus juice processing waste as well as the fallen fruits in the orchards in the typhoon season.

並列關鍵字

grapefruit ； hatch ； lemon ； Meloidogyne ； nematicidal ； orange ； peels

國際替代計量

Effect of Peels of Lemon, Orange, and Grapefruit against Meloidogyne incognita

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