Table 4 Correlation analysis of chlorophyll content, photosynthesis, dry matter accumulation, yield and yield component of red kidney beans under two straw return methods.
From: Impact of straw return and nitrogen fertilizer on photosynthesis and yield of red kidney beans
Index | Chlorophyll content | Pn (µmol·m−2·s−1) | Gs (mmol·m−2·s−1) | Tr (mmol·m-2·s−1) | Ci (µmol·mol−1) | Dry matter in R6 (kg/ha) | Number of pods per plant | Number of seeds per pod | 100-seed weight (g) | Yield (kg/ha) |
|---|---|---|---|---|---|---|---|---|---|---|
Chlorophyll content | 1 | |||||||||
Pn (µmol·m−2·s−1) | 0.993** | 1 | ||||||||
Gs (mmol·m−2·s−1) | 0.967** | 0.981** | 1 | |||||||
Tr (mmol·m−2·s−1) | 0.986** | 0.987** | 0.976** | 1 | ||||||
Ci (µmol·mol−1) | −0.958** | −0.977** | −0.986** | −0.977** | 1 | |||||
Dry matter in R6 (kg/ha) | 0.983** | 0.992** | 0.985** | 0.987** | −0.985** | 1 | ||||
Number of pods per plant | 0.983** | 0.983** | 0.956** | 0.987** | −0.959** | 0.978** | 1 | |||
Number of seeds per pod | 0.969** | 0.976** | 0.985** | 0.984** | −0.987** | 0.987** | 0.958** | 1 | ||
100-seed weight (g) | 0.958** | 0.973** | 0.973** | 0.968** | −0.985** | 0.987** | 0.958** | 0.988** | 1 | |
Yield (kg/ha) | 0.926** | 0.952** | 0.979** | 0.942** | −0.985** | 0.964** | 0.914** | 0.979** | 0.979** | 1 |
