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Table 5 Principal component analysis of 16 phenotype traits evaluated in 374 accessions from NPGS Ethiopian germplasm collection

From: Genomic characterization of a core set of the USDA-NPGS Ethiopian sorghum germplasm collection: implications for germplasm conservation, evaluation, and utilization in crop improvement

Trait PC1 PC2 PC3 PC4
Phenols1 0.37* −0.08 −0.31 0.09
Protein2 0.35* −0.05 0.30* 0.25
Tannins3 0.36* −0.05 −0.33 0.08
3-DOAs4 0.31* −0.21 0.20 0.03
Plant height5 0.08 0.57* 0.12 −0.10
Length6 0.09 0.57* −0.21 0.28
Diameter7 0.29 0.34* −0.02 −0.48
Dhurrin 8 0.10 −0.03 0.38* 0.04
Ratio9 −0.13 0.18 −0.18 0.70*
Flowering10 0.05 0.28* 0.23 −0.10
Seed Size11 −0.31 0.00 0.20 0.07
Fat2 0.25 0.15 0.18 0.04
Fiber2 −0.29 0.13 −0.05 −0.06
Ash2 −0.33 0.13 0.26 0.03
Starch2 −0.20 0.03 −0.47 −0.29
G15 0.01 −0.14 −0.08 −0.02
% Variance 24.4 13.6 12.6 9.90
% Cumulative 24.4 38.0 50.6 60.5
  1. Phenotype evaluations were completed at Isabela and Mayaguez, Puerto Rico in 2013 and 2014
  2. 1Total phenols based on milligram of gallic acid equivalent (GAE)/gram
  3. 2Values are based on percent
  4. 3Condensed tannins based on milligram of catechin equivalents (CE)/gram
  5. 43-Deoxyanthocyanidins content based on absorbance (abs)/milliliter/gram
  6. 5Plant height refer to the distance from the base of the main stalk to the top of the panicle without sorghum converted accessions
  7. 6Panicle length refers to the distance from the base to the top of the panicle
  8. 7Panicle diameter refers to the wider region
  9. 8Dhurrin content in leaf measure at post-flowering stage using HPLC [53]
  10. 9Ratio refers to the length/diameter
  11. 10Flowering time refers to days to 50% flowering of the plot
  12. 11Seed size refers to the volume of 100 seeds
  13. * most important variable in the component