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Position: Home > Articles > Anti-Feedant Activity of the Extracts from Six Species of Wild Rice Against Spodoptera litura Rice Science 2004,11 (5/6) 313-316

Anti-Feedant Activity of the Extracts from Six Species of Wild Rice Against Spodoptera litura

作者：

WAN Shu-qing;FENG Guo-zhong;PAN Da-jian;LUO Qing;DENG Jian-chao

单位：

Guangzhou 510642; China; South China Agricultural University;Laboratory of Insect Toxicology

关键词：

wild rice;extract;Spodoptera litura;anti-feedant activity;germplasm resource

摘要：

Eight wild rice entries related to six species, including E6-1 and E6-3/6-4 (different ecotypes of Oryza grandiglumis); E7-4 (O. granulata), E9-10 and E9-20(different ecotypes of O. latifolia), E13-13 (O. minuta) , E15-13 (O. officinalis) and E16-3 (O. punctata), were used in experiment for the investigation of their anti-feedant effect on Spodoptera litura. The rice leaf extracts were prepared with methanol by Sohxlet method. The extract rates of the six species of wild rice were between 8.50% and 24.86%. Selective anti-feedant activity and non-selective anti-feedant activity of the extracts from the six species of wild rice against the 3rd instar larvae of S. litura showed that the extract of the wild rice E6-1 of O. grandiglumis had stronger anti-feedant activity than the others. The concentration for 50% anti-feedant activity (AFC_(50)) of the wild rice E6-1 extract against the 2nd instar larvae of S. litura was 120 mg/mL in 24 h and 50 mg/mL in 48 h after treatment.

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Anti-Feedant Activity of the Extracts from Six Species of Wild Rice Against Spodoptera litura

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