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Table 1 Traits recorded in the current study for two deficient and sufficient iron (Fe) regimes, where H 2 is the repeatability on an entry means basis for the association mapping population

From: Genome-wide association mapping of iron homeostasis in the maize association population

    H 2
Trait Abbreviation Unit Fe-deficient Fe-sufficient
SPAD value at leaf 3 SP3 SPAD units 0.72 0.86
SPAD value at leaf 4 SP4 SPAD units 0.72 0.87
SPAD value at leaf 5 SP5 SPAD units 0.68 0.81
SPAD value at leaf 6 SP6 SPAD units 0.68 0.77
Root length RL cm 0.72 0.62
Root weight RW g 0.59 0.47
Shoot length SL cm 0.63 0.57
Shoot dry weight SDW g 0.65 0.65
Shoot water content H 2O % 0.53 0.44
Ratio of dry shoot weight SDW/SL g/cm 0.68 0.71
compared to shoot length     
Branching at the terminal 5 cm BTR score 1 - 9 0.68 1
Lateral root formation LAT score 1 - 9 0.68 0.58
Leaf necrosis NEC score 1 - 9 0.61 0.71
  1. 1no variation observed.