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Acta Prataculturae Sinica ›› 2011, Vol. 20 ›› Issue (5): 169-176.

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Antifeeding and contact effects on extracts from 30 kinds of poisonous plants in natural grassland of Gansu Province against larva of Pieris rapae

HU Guan-fang1, LIU Min-yan2, LI Yu-qi2, NIU Shu-jun2, ZHAO Feng2, SHEN Hui-min1   

  1. 1.Department of Pesticide Science, Pratacultural College, Gansu Agricultural University, Lanzhou 730070, China;
    2.Institute of Plant Protection, Gansu Academy of Agricultural Sciences, Lanzhou 730070, China
  • Online:2011-10-20 Published:2011-10-20

Abstract: Anti-feeding and contact effects of extracts from 30 kinds of poisonous plants from natural grasslands of Gansu province against fourth instar larvae of Pieris rapae were assessed by immersion methods. Methanol extracts from Aconitum pendulum, Thalictrum baicalense, Corydalis adunca, Ligularia virgaurea, Artemisia frigida, Peganum harmala, and Stellera chamaejasme had very strong anti-feeding and contact effects against the larvae of P. rapae, with anti-feeding rates between 82.23%-100.00% and contact mortalities between 80.00%-94.12% after 48 hours. Methanol extracts from A. gymnandrum, Euphorbia tibetica, E. fischeriana and E. helioscopia had very strong anti-feeding effects, of 95.14%-97.62% after 48 hours. The eleven kinds of poisonous plants were A. pendulum, T. baicalense, C. adunca, L. virgaurea, A. frigida, P. harmala, S. chamaejasme, A. gymnandrum, E. tibetica, E. fischeriana and E. helioscopia. They are worth further research and development.

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