Table 2.
Phenotypic trait correlations of a selected number of traits related to plant architecture
| Height | Number of seeds per head | Head size | Number of heads | Number of sec. branches | Number of prim. branches | Seeds per plant | 1000 Seed weight | Days to 50% flowering | |
|---|---|---|---|---|---|---|---|---|---|
| SITE 1 | |||||||||
| Height | – | 0.024 | 0.0174 | 0.1705 | 0.1251 | 0.143 | 0.0505 | 0.2947 | 0.4802 |
| Number of seeds per head | P = 0.498 | – | 0.0758 | 0.0083 | 0.049 | 0.0359 | 0.3652 | 0.0714 | −0.0705 |
| Head size | P = 0.5802 | P = 0.0306 | – | −0.0008 | 0.0409 | 0.0235 | −0.0158 | 0.0666 | −0.0954 |
| Number of heads | P < 0.0001 | P = 0.8127 | P = 0.979 | – | 0.355 | 0.6515 | 0.4413 | −0.0439 | 0.6369 |
| Number of sec. branches | P < 0.0001 | P = 0.1552 | P = 0.1952 | P < 0.0001 | – | 0.332 | 0.2118 | 0.145 | 0.425 |
| Number of prim. branches | P < 0.0001 | P = 0.3058 | P = 0.4569 | P < 0.0001 | P < 0.0001 | – | 0.368 | 0.1743 | 0.56 |
| Seeds per plant | P = 0.1404 | P < 0.0001 | P = 0.645 | P < 0.0001 | P < 0.0001 | P < 0.0001 | – | −0.0884 | 0.3364 |
| 1000 Seed weight | P = 0.08 | P = 0.5293 | P = 0.5772 | P = 0.6985 | P = 0.1995 | P = 0.122 | P = 0.4356 | – | 0.0031 |
| Days to 50% flowering | P < 0.0001 | P = 0.5343 | P = 0.4 | P < 0.0001 | P < 0.0001 | P < 0.0001 | P = 0.0023 | P = 0.9786 | – |
| SITE 2 | |||||||||
| Height | – | −0.1831 | 0.1325 | 0.484 | 0.3923 | 0.357 | 0.0485 | 0.1731 | 0.647 |
| Number of seeds per head | P < 0.0001 | – | −0.0235 | −0.1111 | −0.0743 | −0.0481 | 0.1373 | −0.0785 | −0.2104 |
| Head size | P < 0.0001 | P = 0.5345 | – | 0.005 | 0.0861 | 0.05218 | 0.0143 | 0.4582 | 0.4623 |
| Number of heads | P < 0.0001 | P = 0.0029 | P = 0.8803 | – | 0.6466 | 0.4085 | 0.2406 | −0.1677 | 0.4607 |
| Number of sec. branches | P < 0.0001 | P = 0.0461 | P = 0.0098 | P < 0.0001 | – | 0.5758 | 0.2098 | −0.2769 | 0.5135 |
| Number of prim. branches | P < 0.0001 | P = 0.198 | P = 0.118 | P < 0.0001 | P < 0.0001 | – | 0.2656 | −0.0463 | 0.6261 |
| Seeds per plant | P = 0.1989 | P = 0.0009 | P = 0.7061 | P < 0.0001 | P < 0.0001 | P < 0.0001 | – | 0.06441 | 0.0022 |
| 1000 Seed weight | P = 0.1247 | P = 0.489 | P < 0.0001 | P = 0.1371 | P = 0.013 | P = 0.6832 | P = 0.5728 | – | 0.2553 |
| Days to 50% flowering | P < 0.0001 | P = 0.0610 | P < 0.0001 | P < 0.0001 | P < 0.0001 | P < 0.0001 | P = 0.9846 | P = 0.0223 | – |
Pearson's partial correlation between traits after removing the effect of varying stand densities at both common garden sites. Numbers of above the diagonal are the correlation values, numbers below the black line are P-values. Bold and italicized numbers are significant after a Bonferonni correction for multiple comparisons was applied.