A comparison of open hilltop and shade grown trees. T50 of Cornus florida twigs sampled from trees grown from seeds of different geographic origin. Trees were grown in a provenance planting in Kalamazoo County Michigan. 2-1-82.
| Origin (Seed source) | T50 | |
|---|---|---|
| Open hilltop | Shade grown | |
| Northern and northern Appalachian states | ||
| Pennsylvania | -34.5a | -33.0ab |
| Michigan | -34.5a | -33.0ab |
| Virginia | -34.5a | -26.5 b |
| W. Virginia | -34.5a | -26.0b |
| Ohio | -34.5a | -34.5a |
| mean | -34.5 | -30.6 |
| Central and coastal plain states | ||
| Maryland | -34.5a | |
| Connecticut | -25.5c | -28.5ab |
| Missouri | -27.5 be | -34.5a |
| Illinois | -26.5 bc | -34.5a |
| New Jersey | -34.5a | -34.5a |
| Kentucky | -33.5ab | -34.5a |
| mean | -30.3 | -33.3 |
| Southern states | ||
| Georgia | -28.5abc | -30.0ab |
| Tennessee | -30.5ab | -30.0ab |
| mean | -29.5 | -30.0 |
a) T50’s were separated by Chi-Square at p.=05. T50’s followed by the same letter are not significantly different.