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Chemoattraction in the form of positive response of Globodera rostochiensis and Globodera pallida J2s to different linalool (L, undiluted) concentrations (**emulsion and solutions) (M) and potato root diffusate (PRD). Open column indicates response to linalool; grey column to PRD. Response to water was counted as zero and was detracted from that to linalool and PRD solutions (in water). Columns marked with asterisk and containing no mark differs significantly (χ2-test P < 0.05).
