We investigated the ability of transgenic torenia (Scrophulariaceae) plants to resist fungi and arthropod herbivores. Torenia hybrida cv. Summerwave Blue was manipulated to produce Arabidopsis agmatine coumaroyltransferase (AtACT). This catalyses the last step in the biosynthesis of hydroxycinnamic acid amides (HCAAs) which function in defence. Transgenic plants accumulated substantial HCAAs, p...

In this paper we analyse the effects of various treatments on cotton aphids (Aphis gossypii). The standard analysis of count data on cotton aphids determines parameter values by assuming a deterministic growth model and combines these with the corresponding stochastic model to make predictions on population sizes, depending on treatment. Here, we use an integrated stochastic model to capture th...

Seasonal abundance of the strawberry aphid complex under different agronomic practices in the outskirts of La Plata, Argentina was studied on strawberry, Fragaria x ananassa Duchesne (Rosales: Rosaceae). Aphid densities were low in strawberry fields in which insecticides and fungicides were used. In addition to Aphis gossypii, Aphis fabae, Mysus persicae and Macrosiphum euphorbiae, the aphid, C...

The cotton aphid (Aphis gossypii), is one of the most devastating insect pests for chili pepper that damages crop and transmits several viruses. Thus far, there no commercial cultivar with effective resistance to aphids (CA). present study aimed develop a reliable practical screening protocol in peppers tropical areas. Three no-choice test methods i.e., seedling cage, detached leaf, clip cage t...

Abstract Evaluation studies were carried out to simulate realistic field exposures of sulfoxaflor and flonicamid against Aphis gossypii at foraging time Apis mellifera . Semi-field trials rates A. laboratory strain 48 h exposure had equipollent overall mean mortality 62.50 63.50%, respectively in season 2020, likewise 60.50 62.50%, 2021. Lethal values (LT 1 ) ranges 51.33–32.46 days for 49.00–3...