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Table 2 Broad-sense heritabilities (H2) and means for grain yield and kernel/ear attributes estimated through imaging for six maize trials with three replicates evaluated under low soil nitrogen at Harare, Zimbabwe

From: High-throughput method for ear phenotyping and kernel weight estimation in maize using ear digital imaging

Trial Number of Measured Grain yield(Mg ha−1) Broad-sense heritability (H2)
Kernel attributes Ear attributes
Entries (hybrids) Year Visible Kernel Number Mean width (cm) Mean length (cm) Total area (cm2) Mean area (cm) Mean perimeter (cm) Total Number per plot Total Weight (g plot−1) Number per plot Mean length (cm) Mean width (cm)
EHYB1746 50 2017 0.591 0.374 0.725 0.815 0.439 0.71 0.842 0.374 0.301 0.781 0.665 0.507
EHYB1747 50 2017 0.596 0.619 0.657 0.761 0.513 0.722 0.765 0.619 0.492 0.358 0.728 0.634
EHYB1748 50 2017 0.595 0.624 0.709 0.624 0.687 0.69 0.569 0.597 0.700 0.746 0.539 0.278
IHYB1747 50 2017 0.599 0.721 0.737 0.693 0.423 0.607 0.735 0.721 0.442 0.515 0.652 0.504
LHYB1619 55 2016 0.146 0.541 0.904 0.930 0.238 0.917 0.934 0.541 0.320 0.647 0.560 0.730
LHYB1617 55 2016 0.137 0.314 0.798 0.830 0.384 0.782 0.903  0.314 0.287 0.450 0.279 0.239
Mean 0.444 0.532 0.755 0.775 0.447 0.738 0.769 0.527 0.423 0.582 0.570 0.482
   Mean
EHYB1746 50 2017 4.02 4510.01 0.36 0.66 760.64 0.17 1.85 9243.27 3001.43 24.51 14.95 4.81
EHYB1747 50 2017 5.48 5337.80 0.35 0.65 858.42 0.16 1.81 10941.06 3452.16 28.22 14.71 4.70
EHYB1748 50 2017 2.60 4781.87 0.36 0.67 801.47 0.14 1.91 9800.89 3237.06 27.88 14.42 4.66
IHYB1747 50 2017 5.20 5398.55 0.34 0.63 824.45 0.15 1.77 11065.71 3318.40 28.05 14.34 4.64
LHYB1619 55 2016 2.24 3789.83 0.42 0.76 852.04 0.23 2.31 7766.21 2415.55 21.77 16.43 5.23
LHYB1617 55 2016 1.36 3151.16 0.35 0.60 435.25 0.14 2.02 4420.99 1126.73 23.18 11.17 3.93
  1. EHYB early hybrid trial, IHYB intermediate hybrid trial, LHYB late hybrid trial