Table 1.
Correlation coefficients (r) between grain yield, pollen viability , pod harvest index, canopy biomass, leaf temperature differential and other plant attributes of 41 bean genotypes grown under conditions of acid soil and high temperature stress.
| Variables | Grain Yield (kg ha−1) |
Pollen Viability (%) | Pod Harvest Index (PHI, %) | Canopy Biomass (CB, kg ha−1) |
|---|---|---|---|---|
| Grain yield (kg ha−1) | −0.47 ** | 0.68 *** | 0.33 * | |
| Canopy biomass (CB, kg ha−1) | 0.33 * | −0.2 | −0.1 | |
| Pod partitioning index (PPI,%) | 0.74 *** | −0.36 * | 0.68 *** | −0.01 |
| Pod harvest index (PHI, %) | 0.68 *** | −0.27 | −0.1 | |
| Harvest index (HI, %) | 0.06 | 0.02 | 0.38 * | −0.08 |
| Pod number per area (PNA) | 0.92 *** | −0.42 ** | 0.55 ** | 0.3 |
| Seed number per area (SNA) | 0.96 *** | −0.43 ** | 0.59 ** | 0.35 * |
| Days to flowering | 0.07 | 0.14 | 0.08 | −0.06 |
| Days to maturity | 0.02 | −0.03 | −0.02 | −0.17 |
| Pollen viability (%) | −0.47 ** | −0.27 | −0.2 |
Mean values were used in the correlation analysis and *, **, and *** represent levels of significance at 0.05, 0.01, and 0.001, respectively.