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Frequency distribution of measured peduncle morphology traits 2017 and 2018 with highlighted Barke mean (dot dashed line). Traits: Peduncle diameter (DIA [µm]), total thickness of peduncle tissues (WAL [µm]), area of the peduncle cross-section (AREA [mm2]); n = 1232 (2017), n = 1343 (2018).
