Table 5.

Results of principle component analysis of 35 traits measured on 114 Pseudoroegneria spicata populations grown three common garden test sites

Principle component	Eigenvalue	Percent variation explained	Cumulative percent variation	Interpretation*
1	9.96	28	28	Larger size, more inflorescences
2	5.57	16	44	Later heading and anthesis
3	3.11	9	53	Narrower leaves
4	2.19	6	60	Earlier heading but later seed maturation, slower germination
5	1.93	6	65	Longer awns, more upright
6	1.56	4	70	Greener and more pubescent leaves

^*Interpretation based on examination of eigenvector loadings and correlations of PCs with individual traits.