Table 1.
Definitions, broad-sense heritabilities and genomic predictive abilities for 16 traits measured in 138 M. sinensis genotypes
| Trait* | Definition | H 2† | r Sorg (s.d.)‡ |
|---|---|---|---|
| Phenology | |||
| DOYFS1.9 | Date of flowering stage 1: day of year when the first flag leaf emerged | 0.89 | 0.76 (0.02) |
| AvgeSen.9 | Average senescence score (0–10) throughout the growing season | 0.83 | 0.64 (0.01) |
| Morphology/biomass | |||
| BaseDiameter.9 | Largest plant diameter measured at ground level (mm) | 0.52 | 0.27 (0.05) |
| DryMatter.9 | Estimated total dry weight per plant (g) | 0.54 | 0.06 (0.05) |
| LeafLength.7 | Ligule to tip length along the central vein of the youngest leaf with a ligule (cm) | 0.65 | 0.67 (0.01) |
| LeafWidth.7 | Blade width at half-leaf length for the leaf used to measure LeafLength (cm) | 0.64 | 0.52 (0.02) |
| MaxCanopyHeight.9 | Height from the ground to the point of ‘inflection’ of the majority of leaves (cm) | 0.77 | 0.35 (0.03) |
| Moisture.9 | Estimated moisture content based on a sub-sample (%) | 0.59 | 0.70 (0.01) |
| StatureLeafAngle.7 | Three-category score reflecting leaf angle relative to the vertical (0 = vertical, 0.5 = intermediate, 1 = horizontal) | 0.50 | 0.46 (0.03) |
| StatureStemAngle.7 | Four-category score reflecting stem angle relative to the vertical (1 = upright stems, 2 = stems inclined up to 30° from the vertical, 3 = stems inclined up to 60° from the vertical, 4 = stems inclined up to 90° from the vertical) | 0.48 | 0.37 (0.02) |
| StemDiameter.9 | Diameter 10–15 cm from the ground of a randomly chosen stem (mm) | 0.60 | 0.51 (0.03) |
| TallestStem.9 | Length of the tallest stem (cm) | 0.88 | 0.65 (0.01) |
| TransectCount.9 | Number of stems with ≥50 % canopy height across the middle of the plant | 0.51 | 0.17 (0.04) |
| Cell wall composition | |||
| Cellulose.8 | Gravimetrically measured cellulose content (% d. wt) | 0.79 | 0.62 (0.02) |
| Hemicellulose.8 | Gravimetrically measured hemicellulose content (% d. wt) | 0.60 | 0.25 (0.03) |
| Lignin.8 | Gravimetrically measured lignin content (% d. wt) | 0.66 | 0.43 (0.02) |
*Trait: phenotypic traits measured in 2007 (.7), 2008 (.8) or 2009 (.9) (i.e. after two, three or four growing seasons, respectively). Detailed phenotyping protocols were described by Slavov et al. (2013b).
† H 2: broad-sense heritability (Slavov et al., 2014).
‡ r Sorg (s.d.): average predictive ability and standard deviation across 100 random 10-fold cross-validations based on 53 174 single-nucleotide variants obtained from alignments to the Sorghum bicolor genome (Slavov et al., 2014).