Plants extracted substances can constitute the best alternative to synthetic chemical insecticides and a good preservation of environment because they are biodegradables. The leaves Plectranthus glandulosus were with hexane, acetone methanol, then fractionated tested on adults Sitophilus zeamais Callosobruchus maculatus. Corn cowpea seeds each administered three (3) different doses (1, 5 10 g/k...

The cowpea weevil (Callosobruchus maculatus) is the main pest that attacks (Vigna unguiculata) seeds during storage, causing nutritional and economic losses in crop. Thus, studies aiming to identify resistant cultivars have been developed. Chitin-binding proteins (CBP), such vicilins chitinases, detected related with toxicity insects. In this work, we investigated presence of chitin-binding par...

ABSTRACT Cowpea (Vigna unguiculata) is an economically and nutritionally important crop. However, cowpeas are subject to attack by insect pests that reduce the quality nutritional value of grains during storage. The use plant-based products as alternative control has been highlighted for their low toxicity on environment human health. This study aimed evaluate bioactivity different plant extrac...

Inbreeding depression is well documented in insects but the degree to which inbreeding depression varies among populations within species, and among traits within populations, is poorly studied in insects other than Drosophila. Inbreeding depression was examined in two long-term laboratory colonies of the seed beetle, Callosobruchus maculatus (Fabricius), which are used frequently as models for...

Withania adpressa Coss. ex Batt is a wild plant belonging to the family Solanaceae, native Mediterranean area. The present work was undertaken study chemical composition, antioxidant and insecticidal properties of (W. adpressa) extract. extract obtained by use maceration with hydroethanol, its composition characterized HPLC. Evaluation potency achieved DPPH, TAC FRAP bioassays. Insecticidal act...

Griffonia simplicifolia 11, an N-acetylglucosamine-specific legume lectin, has insecticidal activity when fed to the cowpea weevil, Callosobruchus maculatus (F.). A cDNA clone encoding G. simplicifolia II was isolated from a leaf cDNA library, sequenced, and expressed in a bacterial expression system. The recombinant protein exhibited Kacetylglucosamine-binding and insecticidal activity against...

Freeze dried powdered leaves of Cymbopogum citratus (DC) Stapf, Cinnamomum camphor a (L.) Nee & Eberm Ipomoea mauritiana Jacq. famarandus indicus L., Lantana camara L., Myroxylon balsumum (L.) Harm, Citrus aurantium L. and vitex altisima L. were tested against Callosobruchus maculatus under nochoice and choice situations. Under no-choice situation, V. altisima at the rate of 5.0% w/w was highly...

The cowpea weevil, Callosobruchus maculatus, is a major threat to stable production, especially in storage, and has been reported facilitate postharvest losses grains. Host resistance suggested as the best control method but with conflicting knowledge on source of resistance. Hence, study seeks evaluate seed storage proteins (SSPs) coat compounds (SCCs) associated tolerance C. maculatus. SSPs S...