highly significantp < 2.2 × 10 − 16
Single marker analysis revealed that NAL1 _4_31214045 had a highly significant association with tiller number ( p < 2.2 × 10 − 16 ) and explained 22.07% of the phenotypic variance (PVE), while OFP19 _5_15069810 showed a weaker but still significant association ( p = 1.99 × 10 − 5 ), with a PVE of 3.65% (Table 5 ; Fig. 6 A, B).