Fig. 4From: Discrimination between regional biotypes of Impatiens glandulifera using a simple MALDI-TOF MS-based method for use with seedsPCA ordination plot for the triplicate reference-sample MALDI-TOF MS spectra of acid-soluble seed proteins from seeds collected in 2017 from (filled circle) Harmondsworth Moor, (filled square) Lampeter, (open circle) Rhosmaen, and (open square) Silwood Park. PCA analysis was unsupervised, and all peaks were weighted equallyBack to article page