'Bibiani' X 'J.L. Creech' is a Diploid

Rhododendron 'Bibiani' X 'J.L. Creech', which is a Thornton hybrid, 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.

Summary of Ploidy Levels

Diploid 'Bibiani',
Diploid 'Bibiani' X 'J.L. Creech'

Source: John Thornton

John and Sally Perkins

'Hallelujah' is a Triploid

Rhododendron 'Hallelujah', which is a Harold Greer hybrid documented as 'The Honourable Jean Marie de Montague' x 'Kimberly', has been determined to be a triploid using flow cytometry by

Dr. João Loureiro, Dr. Silvia Castro, José Cerca Oliveira, 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.

Summary of Ploidy Levels

Diploid 'The Honourable Jean Marie de Montague',
Triploid 'Hallelujah'

Source: Greer Gardens
Source: Bob Fox

John and Sally Perkins

'Red Olympia' is a Diploid

Rhododendron 'Red Olympia', which is a Halfdan Lem hybrid documented as 'Anna' x 'Fusilier Group', 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.

Summary of Ploidy Levels

Diploid 'Anna',
Diploid 'Red Olympia',
Diploid 'Norman Gill',
Diploid 'The Honorable Jean Marie de Montague'

Source: Greer Gardens

John and Sally Perkins