Table 4.

Principal component analysis of yield-related traits in rapeseed genotypes

Trait	PH	PMB	PAB	PP	BP	MBL	FPH	PL	DSF	DEF	DPM	FP	TSW	SP	SD	EVR%
PC1	0.27	0.19	0.44	0.47	0.37	0.21	0.01	0.02	0.25	0.31	0.11	0.05	− 0.16	− 0.02	0.30	35.64
PC2	0.23	− 0.02	− 0.23	− 0.24	-0.44	0.12	0.12	− 0.07	0.36	0.51	0.16	0.14	− 0.39	0.07	− 0.12	16.50

PC principal component, PH plant height, PMB pods per main branch, PAB pods per axillary branches, PP pods per plant, BP branches per plant, MBL main branch length, FPH first pod height from the ground, PL pod length, DSF days to start of flowering, DEF days to end of flowering, DPM days to physiological maturity, FP flowering period, TSW thousand seed weight, SP seeds per pod, SD stem diameter, EVR explained variance ratio