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PCA t[1]/t[2] scores plot (three components gave R2X = 0.783 and Q2 = 0.631) for healthy and naturally infected Leccino, Cellina di Nardò and Ogliarola salentina leaf samples collected in the early springtime sampling. Healthy and naturally infected samples were collected in Grottaglie (Taranto province) and Galatone (Lecce Province), respectively. Different symbol styles for Leccino (diamonds), Cellina di Nardò (circles) and Ogliarola salentina (triangles) are reported.
