Skip to main content

Table 3 Pearson correlation coefficients analysis among the value of turf quality (TQ), photochemical efficiency (Fv/Fm), chlorophyll content (Chl), photosynthesis rate (Pn), water use efficiency (WUE), electrolyte leakage (EL), leaf relative water content (RWC), root activity (RA) under heat stress conditions across 98 perennial ryegrass accessions

From: Natural variation of physiological traits, molecular markers, and chlorophyll catabolic genes associated with heat tolerance in perennial ryegrass accessions

  PCA rank value TQ Fv/Fm Chl Pn WUE EL RWC RA
PCA rank values 1         
TQ 0.744*** 1        
Fv/Fm 0.578*** 0.750*** 1       
Chl 0.769*** 0.814*** 0.671*** 1      
Pn 0.304** 0.132 0.093 0.237* 1     
WUE −0.216* −0.097 0.109 0.264** 0.259** 1    
EL −0.858*** −0.757*** −0.611*** −0.700*** −0.163 0.207* 1   
RWC 0.764*** 0.865*** 0.729*** 0.793*** 0.099 −0.143 −0.807*** 1  
RA 0.502*** 0.563*** 0.459*** 0.565*** 0.073 −0.124 −0.411*** 0.517*** 1
  1. *, ** and *** indicate significance at P < 0.05, P < 0.01 and P < 0.001, respectively