Sensitivity of Spilarctia obliqua to root extracts of Catharanthus roseus

✍ Scribed by Veena Prajapati; A. K. Tripathi; D. C. Jain; S. Sharma; S. P. S. Khanuja

• Book ID: 101289402
• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 136 KB
• Volume: 12
• Category: Article
• ISSN: 0951-418X
• DOI: 10.1002/(sici)1099-1573(199806)12:4<270::aid-ptr293>3.0.co;2-2

✦ Synopsis

Five fractions from the root of the common periwinkle were evaluated for their antifeedant activity, growth regulatory potential, and effect on fecundity and fertility against various stages of a lepidopterous insect, Spilarctia obliqua. The chloroform and ethyl acetate fractions were highly effective as antifeedants, growth inhibitors and caused sterility in treated male adults. Initial instars of the test insect were quite susceptible to the chloroform fraction at 5% concentration, whereas late instar larvae were unaffected. Negative growth rate values were observed for both the fractions at 5000 ppm concentration.