Repellent Activity of Extracts of Wild Rice Species against Panonychus citri and Aphis citricola in Associated with Esterase Isoenzyme in Insests |
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| Authors: | WAN Shu-qing LIU Xiang-fa FENG Guo-zhong PAN Da-jian |
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| Affiliation: | 1.College of Resources and Environment, South China Agricultural University, Guangzhou 510642, China;2.Rice Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640, China |
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| Abstract: | Six species of wild rice with different ecophenotypes including Oryza grandiglumis (E6-1, E6-3 / 6-4), O. minuta (E13-9, E13-13), O. officinalis (E15-8, E15-13), O. punctata (E16-1, E16-3, E16-13), O. granulata (E7-4), and O. latifolia (101392, E9-1, E9-10) were extracted with methnol and the repellent activity of the extracts against the two insects Aphis citricola and Panonychus citri were studied. The extracts of O. officinalis E15-8 showed higher repellent rate to the two insects than those of the other species. The repellent rates of the extracts of E15-8 to P. citri and A. citricola were 83.26% and 87.86% at 5×104 µg/mL in 24 h and 87.95% and 82.43% in 48 h, respectively. The extracts of O. officinalis E15-8 had the effect of inhibition to the esterase of the two insects. |
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| Keywords: | wild rice Panonychus citri Aphis citricola repellent activity esterase isoenzyme extracts biological control |
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