Table 4. Correlation coefficient between transpiration efficiency related traits and yield.
FLA | SD | A | gs | E | WUEi | CID | BYPP | GYPP | HI | |
---|---|---|---|---|---|---|---|---|---|---|
FLA | -0.543** | 0.467** | -0.154 | -0.625** | 0.637** | -0.684* | 0.624** | 0.604** | 0.002 | |
SD | -0.543** | -0.578* | -0.128 | 0.782** | -0.650** | 0.775* | -0.639** | -0.539** | -0.028 | |
A | 0.467** | -0.578* | 0.217* | -0.705** | 0.618** | -0.600** | 0.556** | 0.348* | 0.369* | |
gs | -0.154 | -0.128 | 0.217* | 0.306* | -0.260* | 0.038 | 0.316* | 0.246* | 0.325* | |
E | -0.625** | 0.782** | -0.505* | 0.306* | -0.688** | 0.760** | -0.557** | -0.602** | 0.139 | |
WUEi | 0.637** | -0.650** | 0.618** | -0.260* | -0.688** | -0.699** | 0.481** | 0.620** | 0.003 | |
CID | -0.684* | 0.775* | -0.600** | 0.038 | 0.760** | -0.699** | -0.600* | -0.608* | 0.201* | |
BYPP | 0.624** | -0.639** | 0.556** | 0.316* | -0.557** | 0.481** | -0.600* | 0.324* | -0.107 | |
GYPP | 0.604** | -0.539** | 0.348* | 0.246* | -0.602** | 0.620** | -0.608* | 0.324* | 0.375** | |
HI | 0.002 | -0.028 | 0.369* | 0.325* | 0.139 | 0.003 | 0.201 | -0.107 | 0.375** |
Asterisks represent significant differences.
* P< 0.05;
** P< 0.01. SD: stomatal density (No. mm-2); FLA: flag leaf area (cm2); A: photosynthetic rate (μmol. m-2 s-1); gs: stomatal conductance (mmol. m-2 s-1); E: transpiration rate (mmol. m-2 s-1); WUEi: instant water use efficiency (μmol. mmol-1); CID: carbon isotopic discrimination (‰); BYPP: biomass yield per plant (g); GYPP: grain yield per plant (g); HI: harvest index.