Figure 2
From: The first crop plant genetically engineered to release an insect pheromone for defence
Time spent (mean ± s.e.) by cereal aphids Sitobion avenae (Sa), Rhopalosiphum padi (Rp) and Metopolophium dirhodum (Md) in different regions of a 4-arm olfactometer (n = 10).
Aphids were exposed to four discrete odour streams, one treated with a headspace sample of volatiles collected from wheat seedlings, the other three treated with solvent (redistilled diethyl ether) control. Treatments that are significantly different (P < 0.05) are marked with an asterisk. (a) Aphids were not repelled by volatiles from untransformed Cadenza wheat seedlings. (b,c) All three aphid species spent significantly less time in the olfactometer region containing volatiles from the transformed wheat lines B2812 R9P1 and B2803 R6P1.
