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

Table 6

Loading matrix of characters initial factor in sugarcane varieties.

Parameter	Factor 1	Factor 2	Factor 3	JD	SV
PN	0.302	0.650	0.553	0.820	0.180
E	0.163	0.883	0.104	0.817	0.183
GS	−0.187	0.821	0.377	0.852	0.148
LAI	0.937	−0.146	−0.011	0.899	0.101
MFIA	−0.863	−0.106	0.199	0.795	0.205
TD	−0.979	−0.028	0.040	0.960	0.040
TR	−0.977	0.050	0.079	0.963	0.037
LD	0.963	−0.046	−0.027	0.931	0.069
NSH	0.645	−0.325	0.534	0.806	0.194
SSW	−0.117	0.557	−0.807	0.976	0.024
CY	0.608	0.327	−0.374	0.616	0.384
VC	5.414	2.438	1.583
%	49.220	22.160	14.390
% CC	49.220	71.380	85.770

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.