Pamela K. Diggle

Professor

pamela.diggle@colorado.edu
303-492-4860
Ramaley C287
Diggle Lab

Ph.D., University of California, Berkeley, 1988

Research Interests

Development and evolution of plants. Current research focuses on the combined effects of genotype, environment, and ontogenetic history on the development and expression of plant phenotypes. Model systems include highly plastic sex expression in andromonoecious Solanum and highly constrained developmental phenomena associated with extreme preformation in alpine Polygonum and Caltha. These studies of plasticity and constraint form the basis for the concept of ontogenetic contingency, a set of developmental constructs that are crucial to understanding the complex determinants of plant phenotypes.

Recent Publications

Diggle, P.K. and J.S. Miller. 2004. Architectural effects mimic floral sexual dimorphism in Solanum (Solanaceae). In press. American Journal of Botany.

Diggle, P.K. 2003. Architectural effects on floral form and function: a review. In: T. Stuessy, E. Hörandl and V. Mayer (eds) Deep Morphology: Toward a Renaissance of Morphology in Plant Systematics. Koeltz, Königstein.

Meloche, C.G. and P.K. Diggle . 2003. The pattern of carbon allocation supporting growth of preformed shoot primoridia in Acomastylis rossii. American Journal of Botany 90: 1313-1320.

Miller, J.S. and P.K. Diggle . 2003. Diversification of andromonoecy in Solanum section Lasiocarpa (Solanaceae): the roles of phenotypic plasticity and architecture. American Journal of Botany 90: 707-715.

Bechtold, H.A., T.A. Forbis, W.D. Bowman, and P.K. Diggle . 2002. Lack of reproductive plasticity in alpine Saxifraga rhomboidea Greene (Saxifragaceae). Nordic Journal of Botany 22: 361-368.

Diggle, P.K. 2002. A developmental morphologist's perspective on plasticity. Evolutionary Ecology 16: 267-283. (Invited contribution).

Diggle, P.K. , M.A. Meixner, A.B. Carroll, and C.F. Aschwanden. 2002. Barriers to sexual reproduction in Polygonum viviparum: a comparative developmental analysis of P. viviparum and P. bistortoides. Annals of Botany 89:145-156.

Forbis, T.A. and P.K. Diggle . 2001. Sub-nivean embryo development in the alpine herb Caltha leptosepala (Ranunculaceae). Canadian Journal of Botany 79: 635-642.

Meloche, C.G. and P.K. Diggle . 2001. Preformation, architectural complexity and developmental flexibility in Acomastylis rossii (Rosaceae). American Journal of Botany 88: 980-992.

Marshall, D.L. and P.K. Diggle . 2001. Mechanisms of differential pollen donor performance in wild radish, Raphanus sativus (Brassicaceae). American Journal of Botany 88: 242-257.

Diggle, P.K. 1999. The influence of development and architectural constraints on the evolution of flowering phenologies. International Journal of Plant Sciences 160: S123-S134.

Moody, A., P.K. Diggle , and D.A. Steingraber. 1999. Developmental analysis of the evolutionary origin of the vegetative propagule of Mimulus gemmiparus (Scrophulariaceae). American Journal of Botany 86: 1512-1522.