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1. Herbivores sometimes suppress plant defences. This study tested whether the presence of pea aphids (Acyrthosiphon pisum Harris) on broad bean (Vicia faba) led to decreased secretion of extrafloral nectar (EFN) which functions as an indirect plant defence against herbivores.
2. To determine effects of aphid infestation on EFN secretion, a comparison was done between EFN secretion in uninfested plants...
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