The Scientific World Journal

Research Article

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

Table 8

Correlation matrix among the traits in sugarcane varieties.
ParameterPNE GSLAIMFIATDTRLDNSHD SSWCY
PN1.000           
E 0.565*1.000          
GS0.608**0.679**1.000         
LAI0.1760.014−0.2581.000        
MFIA−0.192−0.1870.099 −0.739**1.000        
TD−0.273−0.1810.142 −0.933**0.851**1.000       
TR−0.206−0.0850.201 −0.963**0.878**0.978**1.000      
LD0.2200.133−0.204 0.942**−0.769**−0.986**−0.957**1.000     
NSH0.290−0.083−0.284 0.549*−0.390 −0.533*−0.529*0.561*1.000    
D 0.0060.4040.195 −0.219 −0.078 0.057 0.105 −0.089 −0.600 1.000   
SSW−0.0560.3490.151 −0.176 −0.093 0.069 0.081 −0.116 −0.689**0.953**1.000  
CY0.2480.340−0.100 0.422 −0.551*−0.522*−0.510**0.503*0.342 0.4840.428 1.000
Notes: (1) 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; D: diameter; SSW: fresh single stalk weight. (2) −Negative load value; the larger absolute value means the larger load value. (3) *Significant differences at the level of 0.05; **significant differences at the level of 0.01.