摘要

The partially purified pea lectin from fresh green and dry pea seeds significantly influenced various growth and developmental parameters of melon fruit fly, Bactrocera cucurbitae (Coquillett). The larval period and total development period of the melon fruit fly was prolonged with treatment and a marked inhibitory influence on percentage pupation (p<0.01; p<0.05) and percentage emergence (p<0.01; p<0.05) was noticed. The activity of enzymes was assayed in second instar larvae under the influence of LC50 concentration (42.52ppm) of partially purified lectin from dry seeds at increasing exposure intervals of 24, 48 and 72hr. A significant induction in enzyme activity was observed in acid (p<0.01) and alkaline phosphatases (p<0.01), superoxide dismutase (p<0.05) and catalase (p<0.01), whereas; the activity of esterases was suppressed (p<0.01) with treatment at all exposure intervals. The glutathione S-transferases activity showed a slight variation. The present study clearly showed the anti-insect potential of partially purified pea lectin from dry peas as well as green peas against melon fruit fly and further provides a base for deployment of pea lectin in its purified form for its insecticidal potential.

  • 出版日期2014-1