Photosynthetic and Canopy Characteristics of Different Varieties at the Early Elongation Stage and Their Relationships with the Cane Yield in Sugarcane

Table 7

Loading matrix of varimax orthogonal rotation factor in sugarcane varieties.

Parameter	Factor 1	Factor 2	Factor 3	JD	SV
PN	0.204	0.854	−0.221	0.820	0.180
E	0.155	0.838	0.301	0.817	0.183
GS	−0.241	0.886	0.097	0.852	0.148
LAI	0.920	−0.064	−0.222	0.899	0.101
MFIA	−0.886	−0.064	−0.073	0.795	0.205
TD	−0.969	−0.079	0.122	0.960	0.040
TR	−0.974	0.008	0.124	0.963	0.037
LD	0.950	0.019	−0.165	0.931	0.069
NSH	0.528	0.013	−0.726	0.806	0.194
SSW	0.046	0.103	0.981	0.976	0.024
CY	0.673	0.158	0.372	0.616	0.384
VC	5.278	2.267	1.890
% CC	47.982	68.588	85.768

Notes: PN: photosynthesis rate, μmolm⁻² s⁻¹; E: transpiration rate, mmolm⁻² s⁻¹; GS: stomatal conductance, mmolm⁻² s⁻¹; LAI: leaf area index; MFIA: mean leaf angle degree; TD: transmission coefficient for diffuse penetration; TR: transmission coefficient for solar beam radiation penetration; LD: leaf distribution; CY: cane yield; NSH: number of stalks per hectare; SSW: single stalk weight; VC: variance contribution; CC: cumulative contribution; JD: joint degree; SV: special variance; ⁻negative load value; the larger absolute value means the larger load value.