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Insect feeding deterrents from the medicinal plant Tylophora asthmatica
Author(s) -
Verma G. S.,
Ramakrishnan V.,
Mulchandani N. B.,
Chadha M. S.
Publication year - 1986
Publication title -
entomologia experimentalis et applicata
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.765
H-Index - 83
eISSN - 1570-7458
pISSN - 0013-8703
DOI - 10.1111/j.1570-7458.1986.tb02161.x
Subject(s) - spodoptera litura , alkaloid , biology , insect , botany , lepidoptera genitalia , traditional medicine , larva , noctuidae , medicine
Alkaloid extractables of Tylophora asthmatica (Asclepiadaceae) have been tested for the antifeedant activity against Spodoptera litura by incorporating them in semisynthetic and cellulose diets. The alkaloid extractables at 0.01% concentration inhibited feeding of the larvae. Three compounds, tylophorine, tylophorinine and pergularinine, were isolated; and their EC 50 values were found to be 2.9, 8.6 and 12.00 ppm, respectively.