Results 141 to 150 of about 2,856 (184)

INSECT ANTIFEEDING SUBSTANCES IN PLANT LEAVES

Pure and Applied Chemistry, 1975
Abstract
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Sensory responses to the triterpenoid antifeedant toosendanin

1992
One of the basic problems in insect-plant relationships is how insects can perceive thousands of different antifeedant compounds, many of them occurring in plants in only low concentrations, according to Jermy (1983) “host plant specificity in phytophagous insects is determined mainly by the botanical distribution of plant substances inhibiting feeding”
Luo Lin-er, Schoonhoven, L.M.
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Betuligenol derivative with growth inhibition and antifeedant activity

Bioorganic & Medicinal Chemistry Letters, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
Sunil K, Chattopadhyay, Sachin, Srivastava, Koneni V, Sashidhara, Arun K, Tripathi, Asish K, Bhattacharya, Arvind S, Negi   +5 more
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Growth Disruption Effects of an Insect Antifeedant

Nature New Biology, 1972
EXTRACTS of the seeds and leaves of the neem tree, Azadirachta indica, are repellent to insects such as locusts1, 2. Extracts of the closely related Persian lilac or Chinaberry, Melia azaderach, have also been shown to have an antifeedant effect against locusts3 and lepidopterous larvae4. A triter-penoid alcohol, meliantriol, isolated from the fruit of
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Antifeedant C₂₀ Diterpene Alkaloids

Chemistry & Biodiversity, 2004
AbstractWe have tested the insect antifeedant and toxic activity of 21 C20 diterpenoid alkaloids on Spodoptera littoralis and Leptinotarsa decemlineata. The antifeedant effects of the test compounds were structure‐ and species‐dependent. The most active antifeedants to L. decemlineata and S. littoralis were the rearranged form of hetisine (20; EC50=1.7 
Azucena, González-Coloma, Matías, Reina, Ana, Guadaño, Rafael, Martínez-Díaz, Jesús G, Díaz, Juan, García-Rodriguez, Allenger, Alva, Maritza, Grandez   +7 more
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Antifeeding potency of neem formulations

Journal of Environmental Science and Health . Part A: Environmental Science and Engineering, 1984
Abstract Ethanolic extracts of fresh neem seeds were formulated as aqueous suspensions and defatted ground neem kernels were formulated as non‐wettable dusts for greenhouse studies with fall army‐worm larvae, Spodoptera frugiperda (J. E. Smith). First stage larvae of the fall armyworm were fed neem‐treated Golden Bantam sweet corn.
R. E. Redfern, J. D. Warthen, M. Jacobson, J. B. Stokes   +3 more
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Antifeedants in Tropical Pest Management

International Journal of Tropical Insect Science, 1987
Use of plant derivatives for insect pest control was common in the tropics before the advent of synthetic pesticides. Plants such as neem, Azadirachta indica A. Juss, chinaberry, Melia azedarach L., and Warburgia spp., have been known for insect repellent and antifeedant properties in addition to other plants possessing insecticidal and growth ...
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Antifeedant Properties of Seedling Grasses

1976
Feeding by acridids is reduced on seedling grasses compared with that on mature grasses. Other groups of insects show preferences for the maturer stage, which has also been shown to contain lower concentrations of materials which inhibit feeding. Certain seedling chemicals have been examined, and some alkaloids found to be manufactured by the young ...
E. A. Bernays, R. F. Chapman
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Terpenoid antifeedants (Part II): The synthesis of drimane and clerodane insect antifeedants

Recueil des Travaux Chimiques des Pays-Bas, 1987
de Groot, Ae., van Beek, T.A.
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Terpenoid antifeedants, part I. An overview of terpenoid antifeedants of natural origin

Recueil des Travaux Chimiques des Pays-Bas, 1986
van Beek, T.A., de Groot, Ae.
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