Rhododendron 'Marie Hoffman' Picture by Henk Borsje
Rhododendron 'Marie Hoffman', which is often documented as a tetraploid form of Rhododendron prinophyllum, has been determined to be a diploid using flow cytometry by
Dr. João Loureiro, Dr. Silvia Castro, José Cerca, and Mariana Castro
Plant Ecology and Evolution Group,
Centre for Functional Ecology,
Department of Life Sciences,
Faculty of Science and Technology,
University of Coimbra, Portugal.
The nontypical Rhododendron prinophyllum characteristics of 'Marie Hoffman' are most likely due to hybridization with Rhododendron molle. 'Marie Hoffman', also, demonstrates the mule like fertility characteristics associated with most hybrids containing the combination of Rhododendron prinophyllum and Rhododendron molle
Summary of Ploidy Levels
Diploid 'Marie Hoffman',
Diploid Rhododendron molle,
Diploid Rhododendron prinophyllum
Source: John and Sally Perkins
John and Sally Perkins
