Genetic Divergence in Northern Benin Sorghum (Sorghum bicolor L. Moench) Landraces as Revealed by Agromorphological Traits and Selection of Candidate Genotypes

Table 3

Principal component analysis (PCA) of different quantitative agromorphological traits in sorghum.

Variable	PC1	PC2	PC3	PC4	PC5
Days to 50% seed germination	0.100	0.071	0.016	−0.434	0.537
Days to 50% flowering	−0.285	−0.305	0.224	−0.309	−0.129
Stem third internode girth	−0.278	0.109	−0.301	0.415	0.169
Panicle width	−0.100	−0.080	−0.512	0.024	0.019
Exertion length	0.374	0.122	−0.158	−0.169	−0.186
Plant height	−0.317	−0.276	−0.133	−0.311	−0.220
Width of third leaf from top	−0.320	−0.076	−0.279	0.199	0.251
Length of third leaf from top	−0.111	−0.062	−0.117	0.064	0.259
Panicle length	−0.079	−0.042	−0.561	−0.302	−0.105
Peduncle length	0.334	0.093	−0.346	−0.288	−0.189
Panicle weight	−0.287	0.422	0.043	−0.135	−0.207
100-seed weight	−0.081	0.143	0.062	−0.363	0.563
Number of internodes	−0.369	−0.291	0.140	−0.189	−0.137
Grain yield	−0.248	0.495	0.036	−0.086	−0.118
Eigenvalue	3.9343	2.8987	1.8203	1.3513	1.0655
% of total variance	26.2	19.3	12.1	9	7.1
Cumulative variance (%)	26.2	45.6	57.7	66.7	73.8