Skip to Main content Skip to Navigation
Journal articles

Can Mixed Intercropping Protect Cereals from Aphid-Borne Viruses? An Experimental Approach

Abstract : Intercropping, i.e., association of two or more species, is promising to reduce insect populations in fields. The cereal aphid Rhopalosiphum padi, a vector of the Barley yellow dwarf virus PAV (BYDV-PAV), represents a major threat for cereal grain production. In this study, we tested the potential of winter barley intercropped with clover to reduce the size of R. padi populations and to lower the BYDV-PAV incidence in fields. We used arenas (i.e., sets of 36 barley plants) intercropped with or without clover plants (at different sown densities). In each arena, a single viruliferous founder, R. padi, (with an alate or a wingless morph) was deposited to introduce aphids and viruses in the experiment. Thirteen days later, the number of aphids in the arena, the percentage of plants hosting aphids and the infection rates were monitored. Data produced through this experimental design showed that clover alters the distribution of the aphid progeny (lower aphid spread) produced by an alate founder morph. Moreover, clover reduces the size of aphid populations produced by a wingless founder morph. However, despite the effects of clover on biological parameters of R. padi, the presence of clover in barley arena did not modify BYDV infections, suggesting complex mechanisms between partners of the BYDV pathosystem for plant-to-plant virus spread.
Complete list of metadata
Contributor : Anthony Roume Connect in order to contact the contributor
Submitted on : Tuesday, June 28, 2022 - 4:35:11 PM
Last modification on : Friday, August 5, 2022 - 2:44:08 PM


Publisher files allowed on an open archive


Distributed under a Creative Commons Attribution 4.0 International License




Sarah Grauby, Aurélie Ferrer, Vincent Tolon, Anthony Roume, Alexander Wezel, et al.. Can Mixed Intercropping Protect Cereals from Aphid-Borne Viruses? An Experimental Approach. Insects, MDPI, 2022, 13 (6), pp.521. ⟨10.3390/insects13060521⟩. ⟨hal-03706303⟩



Record views


Files downloads