Item	correlation coefficient	PH	PP	PL	NGP	FGP	SR	GW	YP
Phenotypic value	Euclidean distance	0.3411**	0.1692	0.1428	0.3004**	0.3298**	0.1126	0.1533	0.0411
Phenotypic value	Cheng’s index difference value	−0.1822	0.1242	0.1515	0.2861**	0.2472*	−0.1360	−0.1873	−0.0050
Super male parents heterosis	Euclidean distance	0.1451	−0.2437*	0.2196*	0.3406**	0.3293**	−0.0103	0.1293	0.0001
Super male parents heterosis	Cheng’s index difference value	0.1004	−0.1091	0.3234**	0.1420	0.1931	0.1056	0.0261	−0.0414
Control heterosis	Euclidean distance	0.4554**	−0.1109	0.2273*	0.3478**	0.4233**	0.2074*	0.2052	0.1148
Control heterosis	Cheng’s index difference value	−0.2336*	0.0924	0.1664	0.3783**	0.3066**	−0.0999	−0.1898	−0.0667