Larvicidal and antifeedant activity of some indigenous plants of Meghalaya against 4th instar Helicoverpa armigera (Hübner) larvae

Abstract

In the present study, seven indigenous, widely distributed plants of Meghalaya, namely, Pinus kesiya Royle (Pinaceae), Lantana camara Linn. (Verbenaceae), Litsea cubeba Lour. (Lauraceae), Gaultheria fragrantissima Wall. (Ericaceae), Mikania micrantha Kunth.(Asteraceae), Ambrosia artemisiifolia Linn.(Asteraceae) and Eupatorium riparium Regel (Asteraceae) were screened for their larvicidal and antifeedant activity against fourth instar larvae of the cotton bollworm, Helicoverpa armigera (Hübner) under laboratory conditions. The crude extracts of all the seven plants demonstrated a dose dependent increase in bioactivity. However the bioactivity of four plants namely, L. camara, G. fragrantissima, L. cubeba and P. kesiya was significantly higher (p ≤ 0.05) than the negative (solvent) control and extracts of A. artemisiifolia, E. riparium and M. micarantha. Methanol extract of L. camara caused highest oral toxicity with larval mortality ranging between 27.77% and 53.33% across the test concentration (0.25%, 0.5% and 1% w/v) while extract of G. fragrantissima demonstrated the highest feeding deterrence with reduction in larval feeding by50.92% and 70.61% at 0.1% and 0.5% respectively. Crude extract of L. cubeba leaves demonstrated high oral toxicity and feeding deterrence while extract of the needles of P. kesiya showed moderate level of oral toxicity as well as feeding deterrence at the highest tested concentration. Phytochemical analysis of the extracts of these four plants, revealed the presence of five different classes of phytocompounds each of which is known to have deleterious effect on insect pests.Thus it may be concluded that four out of the seven plants possess insecticidal property and can be further investigated for the development of a potent botanical insecticide.

Phytochemical of Piper essential oil and acute toxicity against Helicoverpa armigera (Lepidoptera: Noctuidae)

“…Plant metabolites provide natural defense of plant to attack by arthropod herbivore, with highlight to secondary metabolites that are reported by act as repellents, deterrents (oviposition or feeding) or lethal to herbivorous (Mithofer & Boland, 2012). Curiously, a diversity of plants has been reported by cause toxic effect on H. armigera, like as mortality, deformation and prolongation of the larval stage (Baskar & Ignacimuthu 2012;Anshul et al, 2014;Paul & Moumita-Choudhury, 2016).…”

Review artitle Review: Traditional ecological knowledge of tribal communities of North East India

“…It is reported that farmers use extracts of plants such as neem (Azadirachta indica), pumalo (Citrus grandis), phutuka (Melastoma malabathricum), drumstick (Moringa oleifera), fern, Coconut (Cocos nucifera) bamboo, duck dung, and cow dung, to control common insects and infections such as Thrips (Thrips oryzae) infestations, rice stem borer (Scirpophaga incertulus), rice case worm (Nymphula depunctalis), rice leaf folder (Cnaphalocrocis medinalis), fruit fly (Bactrocera cucurbitae), rhinoceros beetle (Oryctes rhinoceros), rice moth (Sitotroga cerealella) and potato tuber moth (Pthorimaea operculella). Use of plants in pest management is also reported by Paul and Choudhury (2016) where indigenous plants of Meghalaya namely Lantana camara, Gaultheria fragrantissima, Litsea cubeba, and Pinus kesiya show insecticidal activity against fourth instars larvae of the cotton bollworm ( Helicoverpa armigera). Further, a study conducted by Umdor (2004) in the southern part of Meghalaya brings out a vivid picture of TEK in pest management of areca nut.…”

A Review of Common Medicinal Plants in Chin State, Myanmar

“…Gaultheria fragrantissima Wall. Ericaceae Leaves Fever, headaches, inflammatory joint disorders, back pain, and used as antifebrile and diuretic [11] Nematicidal [63], antioxidant [70], antifungal [71], and insecticidal properties [68,72] 9. Hydnocarpus kurzii (King) Warb.…”

“…[61], salicylic acid [61][62], p-hydroxybenzoic acid, o-pyrocatechuic acid, gentisic acid, protocatechuic acid, vanillic acid, p-coumaric acid, caffeic acid, ferulic acid [62], ethyl salicylate [63], 4-hydroxy-4-methyl-2-pentanone [64], methyl sailicylate [63][64][65][66][67][68], α-pinene, β-pinene, Δ 3 -carene, longifolene, and caryophyllene oxide [69]. Pharmacological studies have highlighted the nematicidal [63], antioxidant [70], antifungal [71], and insecticidal properties [68,72] of G. fragrantissima.…”

“…The compounds isolated from T. triquetrum were evaluated for anthelminthic [183], lipolysis [187], hypoglycemic [185][186], and antihepatotoxic activities [187]. [11] Nematicidal [63], antioxidant [70], antifungal [71], and insecticidal properties [68,72] 9. Hydnocarpus kurzii (King) Warb.…”