BIBLIOGRAFIA |
| LaROCHE G. |
| 1978 |
| An Experimental Study of Population differences in Leaf Morphology of Aquilegia canadensis L. (Ranunculaceae). |
| AMERICAN MIDLAND NATURALIST |
| THE UNIVERSITY OF NOTRE DAME, OCT. 1978. |
| 100(2):341-349 |
| FIG.1, TABB.3 |
| ZOOLOGIA |
| Eleven basal leaf characteristics were studied in four western Massachusetts populations of Aquilegia canadensis L. All characteristics were significantly different (P < 0.05) among populations. Plants in the open, most xeric site (Deerfield) produced the smallest leaves. Petiole and blade lengths were independently controlled or responded separately to an environmental factor(s). Sexually produced offspring from each population were transplanted to each site and in a greenhouse. The results show all 11 characteristics have a high degree of plasticity and the environment at each site played the dominant role in producing significant differences among the original populations for eight characteristics. Nevertheless, this experiment gives evidence of genetic differences among populations for 10 characteristics. The offspring from one site (Hawley) showed reduced plasticity for seven characteristics. The environments at the two most extreme of the four sites (Deer-field and Hawley) suppressed the expression of genetic differences. These results show it is possible to determine the relative effects that environment and heredity have on leaf characteristics utilizing sexually produced plants instead of the usual cloned material. |
An Experimental Study(file pdf, 995 KB)
