Fig. 2.

Box plot analysis of leaf blade area (a) and leaf number (b) per the main culm based on photoperiod response. n = 92 accessions of photoperiod sensitive (Ppd-H1) and n = 123 accessions with reduced photoperiod sensitivity (ppd-H1). AP awn primordium, Alqudah and Schnurbusch (2014); TIP: tipping, Z49; HD: heading, Z55; AE: anther extrusion, Z65; Hrv: Harvesting, Zadoks et al. (1974). Asterisk denotes leaf area significantly different at P ≤ 0.05 according to LSD between photoperiod groups at the same developmental stage. The degree of significance indicated as *P, 0.05; **P, 0.01; ***P, 0.001