Table 7. Pearson’s product-moment correlation coefficients between metabolite concentration and kernel yield per pot, kernel yield per tiller, and average kernel weight across all temperature and genotype data.
The top six metabolites showing the greatest decrease in metabolite concentration in heat stressed plants compared to control plants were selected for correlation.
| Compounds | Grain yield per spike |
Individual kernel weight |
|---|---|---|
| (g spike1) | (g kernel-1) | |
| Drummondol | 0.08 | 0.25 |
| Anthranilate | 0.16 | 0.30 |
| Dimethylmaleate | 0.55*** | 0.66*** |
| Galactosylglycerol | 0.31 | 0.54*** |
| Guanine | 0.19 | 0.43** |
| Glycerone | 0.14 | 0.18 |
**significant at P<0.01
***significant at P<0.001.