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Table 7 Principal component analysis of naked barley accessions based on qualitative traits

From: Agro-morphological diversity of Nepalese naked barley landraces

Quantitative traits PC1 PC2 PC3 PC4 PC5
Eigen value 2.74 1.82 1.37 1.03 0.81
Proportion of variance 0.27 0.18 0.13 0.10 0.08
Growth habit − 0.21 − 0.49 0.05 − 0.37 − 0.11
Stem pigmentation 0.32 − 0.12 0.31 − 0.57 0.11
Tillering capacity − 0.30 0.44 − 0.09 − 0.27 0.02
Spike density 0.11 − 0.06 − 0.67 0.04 − 0.53
Lemma awn/hoods 0.42 0.19 − 0.09 − 0.07 0.25
Lemma awn barbs − 0.38 − 0.39 − 0.09 − 0.30 − 0.03
Glume color 0.01 − 0.48 0.20 0.54 0.02
Grain color 0.45 − 0.23 − 0.03 0.06 0.17
Grain size − 0.06 0.22 0.61 0.11 − 0.57
Overall phenotypic acceptance 0.45 − 0.06 0.02 − 0.20 − 0.51